I'm currently modeling yoda(from starwars

I'm not nearly finished yet, but i like the eyes already,especially since i only used procedural textures.
I want to use the mental ray skinshader and i know this will be really (bliep, bliep) knowing mental ray shaders:p
I want to model the big creases in his head, but i want to texture the small ones, if someone has any idea how to do this to get the best results i would appreciate it .
Any other advice is welcome of course.
cheers