Course available here:
https://www.artstation.com/marketplace/p/6Vvw3/forearm-anatomy-in-motion-a-comprehensive-guide?utm_source=artstation&utm_medium=referral&utm_campaign=homepage&utm_term=marketplace
Examples of form changes and videos from my Forearm Anatomy Course. The course covers proportions, muscle groups, and how they influence the outer form while in motion. Releasing soon.
Images cover all major muscle groups flexing independently.