The black one was a bit tricky :
I made a paintless face, desaturated reduced the brightness and higher the contrast sor i have a plain black face without losing all the details of the face. then i took screencaps of his entrance, created a new layer and drew the white designs, then load selection and pasted the paintless face into it, desaturated added contrast and brightness for it to not loose all the details...not sure if that's very clear though.
The other one is just a photo resized and barely edited.
Wasn't there a hack to have 2 hands textures ? I just thought about the fact that his right hand is tattooed.