color the sides of the head for it to color the back of the texture.the top is same bottom same.middle is the face of the texture.my sister was self taught.
and search for the head texture item
Note: there's three different types, the usual head texture, the 256x256, and the 512 one.
the higher the resolution is, better quality it'll have. Although won't be a nice thing to put a 128 image on a 512 head, or vice-versa, that'll make it loose quality by resizing it.