With my more usual lighting setups I think my shader works pretty good? But always looking to improve it. I'm using bump, displacement, and normal for different things in the shader. Bump has the skin surface texture, Displacement has the veins, moles etc,... I don't normally use a normal map on my skin shader but was trying it here. It has evolved over time into what it is now and I'm sure there are some things that are now superfluous or unneccesary...