For people who may interesting and thought it would be helpful
if you are interesting please check the link
This package includes:
Part one : ( 13 mins)
how to using different layer to paint the skin, as well as introduce what brush I use in this tutorial,
Part two: ( 2hrs 13 mins)
paint a head directly, from basic structure line to color blocking and rendering, also use what we learn from part one, used the technique to applying color by using different layers.