not sure if youre interested in anatomical corrections this late, but here's a quick ecorche of the arm:
The "orange" represents the bony landmarks:
- Have a more defined Acromion Process (Rectangle at the top of the arm). For someone this muscular and ripped, this landmark should be VERY apparent.
You should have a more defined Styloid Process of the Ulna (head of the Ulna). This small detail this defines the wrist silhouette from the front.
There's a juicy landmark called the Interclavicular Fossa:
It's the plane change between the pectoral and deltoid. For someone this ripped you can carve in a pretty deep striation.
Another juicy landmark is the Cubital Fossa. It's the "triangle" of tendon at the bottom of the bicep.
The only time the bicep extends down that far is when the hand is supinated (palms down).
Last thing Id point out, is the braccioradialis actually attaches higher up the arm.
Great design! can't wait to see this thing finished!!!!