I'm not very good at the texture thing, but in the body for example. I painted in and layered different textured in photoshop.
In this example the body is shown in shadermap pro.
I like this program for auto generating your different maps.
The background is the displacement map.
I just recently figured out how to combine this map with a displacement map exported from zbrush.

You make a copy of your body and obj it to zbrush, and sculpt the body. Then export a displacement map.