Grumbacher Tips & Techniques - When a color is too bright and needs to be toned down, or you want to create a shadow, mix a small amount of the color opposite on the color wheel to "neutralize" the color. Chartpak Inc. is affiliated with Thalo, LLC
Materials and Methods Matter: Charcoal Drawing Techniques
Materials and Methods Matter: Introduction to Inks and Paper
Dr. Randall Feingold
TICO TORRES
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