Is this in any way useful for what you're doing, bagginsbill?

I can make something similar for the nipples and areolas, but for veins, pores and such I'd have to look at lots of references and experiment for a while. If you made a mask-driven shader and some rough preliminary masks to go with it, I'm sure someone would pick up the ball.

-- I'm not mad at you, just Westphalian.