well lesse, a few things that stick out to me:
-top right side of the helmet, liked V1 better, but the edit to the other side was good as it seemed there was too much noise.
-there is little-no anti-aliasing
-how many colors in the eyes?
-the outlines are painfully present, find a way to either remove them or make them less noticeable.
-helmet and face seem facing slightly different directions.\
-there's a bit of banding, but the rest should probably bee cleaned up first.
otherwise looks good.