Thanks!
About the tutorial i dont have time to crete one, but you have severals to create human heads; i personally like these two:
3DTotal Tutorials CGArena : Video Tutorial - Modeling Female Face
The skin textures i make in Photoshop using some references from pictures
Then in Photoshop i make finar retouch like the eyebrows, eyelashes (diferent size brushes and paints and some references from humans)
Also i had that white spots in the eyes and add some color corrections/Glow/filters/Blur/ to achieve the final image.