This a realistic portrait of Big boss from the MGS series (It's not very good ! lol!). I model and sculpt the head and i paint the texture skin with the bprojection addon. I try to make a good hair particule by using techniques of other blender-artists. I hope it will help someone !
Thanks ! you can find some tutorials to make better portrait : http://cgcookie.com/blender/lessons/part-01-sculpting/ . You will find all the steps you need to make better models than mine !
I think it is well done I am not that skilled with Blender, so I will learn from your work Thanks