Interesting model but I don\'t really like the square-head style, I know it\'s a voxel game but it\'s not really all square since we have wedges, unlike Minecraft which is really square with stairs and everything.
The head is also a bit too big, if you were to add a spacesuit helmet over it, it would look silly.
The body is nice, feet joints and everything... the knees could use a wedge shape though :P
About the head again... you could inspire from low-poly old games, like: http://images.wikia.com/half-life/en/images/2/27/Scientist_models.jpg
Also, it could use some optimization, for example, you don\'t need to split the top-body which makes additional cutting in the texture and more importantly extra polygons, a single face is enough, same thing for head\'s bottom face and wrist-to-hand face... unless if the 3D editor splits them automatically and you\'ll be optimizing regardless if accepted.