Like the head, arms were based on a Zsphere setup. When I had a very low poly mesh, I moved point after point to adjust the topology. Then, I subdivided, moved points, subdivided, moved more points…
Textures were painted the same way as for the head, using ZAppLink.
The chest :
a. Zsphere setup
b. Convert to polymesh
c. Move points, delete unused faces
d. Refine and add details
