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Content: sketch, diagram, drawing, tutorial, human anatomy, muscles

People:

Environment:

Lighting:

Perspective: side view

Keywords: arm, elbow, muscles, anatomy, flex, bend, contraction, expansion, change, artist, reference

What is in the image: the image is a tutorial on how to draw the muscles of the arm. it shows how the muscles change shape when the arm is bent at the elbow. the tutorial is in japanese.

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WDTagged Tags: white background, simple background, penis, sketch, how to