How to change your character's hair, hair color, player skin, shirt, pants, face and package?
If you don't know how to tell me make free model and i will take it. Ok?
Skin color and face are easy enough-- just modify the BrickColor and the face Decal's ID property, respectively.
You might be interested in this, too: http://wiki.roblox.com/index.php?title=CharacterAppearance_(Property)