Those tweaks really helped! I see you also added some highlights for the light effect.
Something else that has really helped me with poses, gesture and anatomy, like, a lot, is to use my camera (I have a simple desktop camera), set it to 10 seconds, pose myself in the exact pose I'm looking for, then crop it use it as a reference to draw the basic gesture, and exagerate features as needed. Sometimes if I have props or a towel I'll pose it as well to get reference for basic form construction.