I think what you've done to the arms and shoulders on the front view helped. Be mindful of the banding that's being caused now underneath the head and along the sides of the body where the darkest shadow meets the black lineart. It's causing a bit of blurriness/ambiguity. Easy fix - just reduce the shadow very slightly so the shadow isn't hugging the outline for the entirety of its length. Also consider broadening the single-pixel highlights on the pecs now that there's more room. The shading adjustment helped with the feet. No complaints there.
I'm not particularly concerned about the arm length at this point - it seems fine. If you want to nitpick with the arms you can consider trying to better show the bend of the arms in the front and back view, since arms at your side aren't generally vertically straight, but I worry it might be too drastic since the arms are going subtly between the pixels of the grid (the elbows are in a subpixel location, if you will).
This is subtle, but you may want to consider standardizing the location of the specular highlight on the head. Have you ever held and rotated a reflective ball or other spherical object? It stays in more or less the same place, unless the camera changes location. You can try it out if you own anything spherical or uniformly cylindrical (a soda can comes to mind if you don't have anything spherical). It seems counter-intuitive but the reason for it is that the location of the specular is being caused by the light source itself bouncing off a form toward your eye. So if your eye or the light source don't move, and the shape of the form is roughly the same, you'll get essentially the same specular reflection.
