The Amazing Thing About Skin
You can either attempt to replicate skin tone exactly, as if your sculpting flesh from scratch.You can capture the ways it reflects light, against a pool and sun.
or you can go completely off the reservation and paint it with, say, Indigo Blue, Old Holland Gold Green and white over a wash of Rose Madder:
Nor could one neglect the importance of glazing, where one applies thin transparent layers of paint above a molded form to capture the nature of skin’s translucence.
For portion of the lecture where I discuss another curious aspect of depicting skin, not mentioned here, and a recipe to help you achieve it go to the link below: