[Course]illustrator,rinotuna2_리노참치2KR Details
Intro
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Class Intro
Illustrator Rinotuna
Get a rundown of how effective use of light & shadow can transform your character illustrations
Fixing Awkward Drawings: Shadow Logic & 3D Formulas
Did you know your drawings might feel off because you're shading by intuition, not structure? Join legendary illustrator Rinotuna and master shadow design and 3D modeling techniques to boost both detail and quality in your character art—this is the course students have been waiting for.
Learn to express shadows with clarity and confidence master form, 3D modeling, and tone control using Rinotuna’s proven shadow formulas. Now available on Coloso!
Class Perks
Special Gift from Rinotuna
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Shadow & Shading Design to Build Structural SenseUnlimited Access to 24 Chapters -
Systematically Organized Shading Design Formulas22 PSD Files Summarizing the Course Content -
Rinotuna’s Brushes1 Photoshop Blending & Line Art Brush Set
Recommendation
Who should take this class?
Intermediate artists ready to go beyond basics and master shading formulas
Self-taught artists who lose direction at the shading stage and struggle with inconsistent results
Aspiring illustrators who want practical, ready-to-use shadow design techniques
Illustrator
Rinotuna's Course Series
Expert Illustrator Rinotuna's Portfolio
Why Take This Class?
Discover how Rinotuna identifies incorrect shadows in drawings and the methods used to fix them! Experience Rinotuna’s online drawing correction class that reveals how he corrects common mistakes in shadows and three-dimensional modeling. With Rinotuna’s unique, detailed solutions, frequently made errors in shading and form are precisely fixed.
From volume, tone, to structural line design, this practical quality-up class sharpens your once vague sense of shadow placement. Through student work reviews, learn to pinpoint problems and improve the quality of your art step by step. Unlock the key to adding rich form and depth to your drawings with expert shadow and shading techniques!
The Art of Depth: Structural Shadows, 3D Forms, and Practical Drawing Techniques
Part 1. Pre-Class Review: Brush Control and Layer Blending Options
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Hard Brush Blending Formula -
Airbrush Blending Formula -
Using Layer Blending Modes
Part 2. Understanding the Fundamentals of Shadows
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The Formula of Light and Shadow -
Highlight Placement Formula -
Logical Shadow Calculation Method
Part 3. Understanding Body Structure and Shadow Design by Area
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Male & Female Faces -
Male & Female Upper Body
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Male & Female Lower Body -
8 Types of Clothing Folds
Part 4. Correcting Common Shadow Mistakes: Understanding Deep Structure
Illustrator Rinotuna directly reviews and corrects drawings submitted by students.
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Face Structure -
Upper Body and Shoulders
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Lower Body and Pelvis Structure -
Clothing Folds
Part 5. Mastering Flexible Shadow Application
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Starting Shadow Planning from Sketches -
Tone Distribution
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Coloring Stage -
Shadow and Shading Techniques by Style
Part 6. Practical Male & Female Anatomy Structure & Clothing Fold Expression
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[Practical] Male Character: Expressing Solid Muscles -
[Practical] Female Character: Expressing Soft Anatomy and Distinct Clothing Folds
*The above images are sample images for a better understanding.
Instructor
Illustrator
Rinotuna
Hello, I’m Rinotuna, an illustrator. I currently teach figure drawing and illustration at Arteum Academy, and I work as a character designer, creating unique and appealing characters through social media and various game projects.
Like many of you, I often felt lost when my designs and shading looked off but couldn’t figure out why. That’s what led me to start organizing a structural approach to shadows and coloring. In this course, I’ll share that process with you helping you move beyond relying solely on instinct and instead enjoy the fun of thinking through your art.
Illustrator Rinotuna
[Current]
Illustrator
Projects & Awards
[Books Published]
Kind Drawing: A Beginner-Friendly Guide
Kind Coloring
Dynamic Drawing
Kind Light and Color
[Participated Projects]
Illustration outsourcing for SHIFT UP
Character design outsourcing for Supercell
Character illustration for PRISM PROJECT Pina (Virtual YouTuber)
Character design outsourcing for Second Dinner
Character design and illustration outsourcing for Sunborn Network Technology (Girls' Frontline)
Character illustration outsourcing for Tencent Games (Alchemy Stars)
Illustration outsourcing for Riot Games (Wild Rift)
Illustration outsourcing for NEOWIZ Dimax
Cover illustration for Pixic 2023 Illustrator in Korea
Student review
Class Recommended By Rinotuna's Students
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Student AI would give this course a perfect score of 100 out of 10 it was incredibly satisfying. I realized things I didn’t know even though I thought I did, and I was able to easily understand concepts that I usually struggled with. I also gained entirely new knowledge, so saying the course was valuable doesn’t even cover how much I learned. The biggest benefit for me was learning a drawing process that fits me perfectly.
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Student BI really enjoyed the course, it felt like playing a fun game. The instructor’s unique way of explaining and entertaining examples stuck in my mind, and now drawing doesn’t feel difficult anymore. The content was so useful that I watched it multiple times. While watching, I could feel the instructor’s passion, which motivated me to work harder as well. Seeing the various examples and real work processes shared by the instructor gave me the confidence to think, “I can do this too.” This is the first time I’ve experienced such a fun and valuable course!
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Student CTo sum up, I’m extremely satisfied with the course! From start to finish, it was packed with valuable lessons things you can only learn from Rinotuna and nowhere else. The abundant examples throughout the course really helped my understanding. Rather than just explaining verbally, the instructor draws and explains in detail, showing how to apply the theory with actual drawings. This was very helpful. The course organizes and clarifies parts that are often abstract, hard to explain, or easily overlooked, presenting them in a very systematic and detailed way.
Highlights
Class Highlights
Structure-Based Shadow & Shading Design: Guided by Logic, Not Instinct
Go beyond vague intuition with a logical, formula-based approach to shadow design. Understand the three key structural properties, size, depth, and sharpness to build a solid thought process for designing shadows with clarity and confidence.
Correcting Structural and Shadow Mistakes Together: Live Fixes & Walkthroughs
Why does this look off? What’s wrong with this placement? Learn how to break the cycle of repeated shadow mistakes through structural understanding and real-time corrections. Sharpen your eye to identify and fix issues on your own while gaining hands-on insight from Rinotuna’s live demos.
Clear Form & Dimension in Any Art Style
Master Rinotuna’s universal shadow design formula that works across styles from stylized to semi-realistic without the pressure of deep anatomical study. Learn how to apply structural logic and tone stylization directly to your own drawing style and build the ability to adapt shading techniques to any character design.
Class Details
You'll Learn
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How to Visualize Structure and Express It Through ShadingGo beyond simple theory with practical shading design! Learn to understand form in 3D and visualize structure following the flow of shadows and shading. Practice drawing structures and designing shading boundaries step-by-step for real-world application. -
Correcting Common Shading Mistakes StructurallyWhy do my shadows look off? Analyze shadows on frequently tricky areas like the face, torso, limbs, and pelvis from a structural perspective. Build your ability to spot and fix issues with hands-on correction demos led by Rinotuna. -
Understanding Light and Surfaces to Place Shading LogicallyLearn the relationship between light and form without anatomy knowledge! Using the core rule that unseen surfaces become shadows, master concepts like surface-to-surface relationships, highlight placement, and shadow edge design in direct light settings.
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The Relationship Between Clothing Fold Structure Principles and Shading DesignLearn the three essential elements for structurally interpreting clothing folds: contact points, empty spaces, and force directions. Move beyond simple reference copying by understanding how folds form and designing them in 3D step-by-step. -
Reflected Light, Ambient Light & Occlusion Shadows for Intuitive Tone DesignAdjust shadow density naturally without complex calculations! Discover stable tone distribution techniques and grasp the roles of reflected light, ambient light, and occlusion shadows. Use a checklist to evaluate light, shadow, and tone balance in your artwork. -
Structural Shading Guide Easily Applied to Any Art StyleWhether semi-realistic, stylized, or cel-shaded, adapt structural shading methods to fit your unique style! Practice balancing style and shading through real character illustration demos for male and female figures, focusing on key differences in each style.
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Interview with
Illustrator Rinotuna
Question.01
What do you consider your strengths in your usual work?
In my character drawing work, I place great importance on the design process that clearly conveys the emotions and messages I want to express. I believe drawing is a form of communication with the viewer, so I always focus on creating a structure that delivers clear intent. Therefore, I try not to rely solely on intuition but to understand and judge structurally why shadows appear in certain places. Designing shadows to express volume and the flow of force, rather than just patterns or stains, is the core of my work.
Question.02
How are your unique strengths reflected in the curriculum of this course?
In this course, wrinkles and shadows are interpreted not as flat decorations but based on three principles: structure, empty space, and direction of force. The curriculum is designed to logically follow and understand why shadows appear in certain places and shapes. Additionally, we review real student works together to help students approach their drawings with 'thought' rather than just intuition.
Question.03
What is the purpose of this course and what makes it unique?
This course explains the reasons and locations of shadows through structure and logic, helping students view shadows as tools to design the form of their drawings. Instead of flat coloring, it guides learners to develop a three-dimensional sense, adding depth to their art. I want to convey that to enjoy drawing, imagination is important—but so is thoughtful consideration.
Question.04
Lastly, please share a message for your students and aspiring creators.
I believe that the vague but genuine desire to improve your drawing skills was the starting point that brought you to this course. This class is designed to build your ability to think structurally about shadows and develop confident judgment in your work, moving beyond simple intuition. From fundamentals to practical applications, steadily build your skills step by step. I hope this choice becomes a great first step in transforming your art journey.
Required Programs
This course will use Adobe Photoshop CC 2025
Please purchase and install these program(s) for an optimized chapter experience.
*These programs and/or materials will not be provided with the chapter.
