With nearly 20 muscles in the forearm, it can be tricky to draw especially when the arm is moving. Breaking them down into the 3 main groups helps make the forearm manageable to draw. In this assignment example I’ll simplify the muscles into three main groups: the flexors, the extensors, and the ridge muscles, while getting the gesture of the arm. Then I’ll break them up into the individual muscles and develop the forms with some shading.

If you haven't seen the anatomy lesson on the forearms, go check that out first. This is a demonstration of that lesson's assignment. Forearms are complicated, so it might help to know some basic info about forearms while watching this demo.