I know it's not a masterpiece.

However, some general comments on anatomy and whatnot would be fantastic. Thanks!

Awesome on how it came out! The way you made the bulk on their body and arms makes him look hearty, and you really gave both head and body hair a nice soft appearance -- certainly got a nice bara look going on.

The main things I see with the anatomy are that the forearms appear long compared to the rest of the arm and that the quadriceps could be more defined by linework as you did with the inner thigh, considering the thigh's thick size. Otherwise, solid work!