I'm now in the process of multilayering skin textures in Photoshop. This example has only a few so far, with my UV mesh on top as reference to see where stuff goes. I'm very rusty in Photoshop, and honestly feel tempted to go into After Effects and use Mattes opposed to learning the intricacies of masks again, but right now it's all about creating seamless patterns of textures and multiplying them on top of each other and now I'm going to do some color layers to give it some life.
:D