I just use the foundation Yellow,give it a wash of Dark flesh. Then bring it up again using the foundation yellow and if I am working on a elite or HQ then mix in some bleached bone for finally highlight.
I have also just washed the foundation yellow with a watered down black wash then brought it back with the foundation paint which is want I did in the first picture.
I have also just washed the foundation yellow with a watered down black wash then brought it back with the foundation paint which is want I did in the first picture.

