Fuck, I just lost my comment due to a misclick on my phone ;-;
So to make things shorter.
Face is familiar. This suggests c/p.
Shading on blue mask below face is nice. Simple but accurate. Same for the metal. However, head varies too much in detail. High in the face. Pretty damn low everywhere else. Another sign of c&p. To make it blend better, choose faces that are similar to your sets style. Or reshade them to be. I'd encourage the latter since that would give more practice with shading.
Don't know sub zero so excuse me if this is by design. But hands look like separate halves stuck together. Connect fingers to knuckles to back of hand.
Seems like legs are more detail dense than the head. Not as well shaded, but certainly more objects. I wish shading on body had same attention as head did. Seems more jagged, and not cuz of lower pixels.
Also. Take. Better. Screenshots. Your arms cover up the thighs so I can't judge. What's wrong with the traditional hold-all stance? You only needed 3 pics to get everything. Front, back, and side. For inside legs, use a heli kick, which should also reveal inside arms. You don't need a fancy pose here. This should be more for getting comments to help improve. Without good shots, it's hard to criticize constuctively. Heck, your two v7 shots looked pretty much the same. Can't stress enough how crucial good shots are.