for getting a head texture u need to buy an item called: head texture. they are cheapest at the market.
you can find it with the dealfinder for about 1900tc.
when you get it go into shop in the top of the screen, and then look at the left side of the screen for something called: Textures
in Textures you can put and image ind the item and press upload
about 5 mins later you will have on the head texture ingame

hope it helped