However, Jessie Oleson Moore has written a blog on Craftsy called An Easy Method for Mixing Acrylic Paint for Skin Tones that might just help.
According to Jesse:
"By using the simple method detailed in this tutorial, you’ll learn how to mix skin tones using different ratios of the primary colors. This easy method requires a little work to refine, but is a fantastic and accessible method for artists of any level. With a little practice, you’ll be creating skin tones like a pro."Jesse's blog is certainly worth a read and I will be experimenting with Jesse's method for mixing colors on the next doll I create.