Don't forget to add the programs used for the head.
Uh, honestly, the mouth is the only decent part of the texture. It seems like you've been just trying to work only that part out. If you could get the other parts done with the same amount of quality, the head would look way better.
Also, needs more shading™.
Also #2, at a quick glance, it seems like the mouth and eyes would be really stretched when put on a sphere. You could try to shrink them a bit(horizontally?)