It seams to be so easy to do a male head in 3D, though a female one is so difficult. I think the reason is that you rarely see a bald woman. I think I’ve finally done it! It’s blue because this sculptris texture is awesome.
For reference I’ve used photos my my head, a mirror, a mask, and this site came in handy. http://www.bleaching-dental.com/articles/features_of_female_and_male_faces.html