Ok been working the past 3-4 days on self taught hard headed skin/textuering tricks in Paint Shop pro 9.

Heres the frist batch of tests

Using PSP9 I have found you can use duplicate the layer twice use its rastar properties to first knock off the white/black color ranges with blend ranges, then use lighten/darken/dodge  to bring out the dark/light effect and then use blend to adjsut it.

These 2 textures I have done using this process

I am still learning as I go  anyone know of any other tips or tricks?

edit

new blueish one