your mapping looks great on the face, the ears, lips and eyelids.  it looks like it might be a bit of a problem at the nose, chin and under the chin.  but notice the big circle on the scalp?  it looks like it would be fine if you don't want to have any scalp textures.  i'm kind of ambivalent about them, myself, but if you wanted people to be able to make textures like Milan by Danae, it looks awfully hard.