I thought I'd share with everyone how I shade skin :3
So this is how a shade skin when I have no light source and/or this how I shade before I do highlights/determine my light source.
I shade with at least 5 different colors. 2 closely related to the to the base color and 2 red hues that would give the skin a more flesh look (cuz it looks better if you shade with more than one color, my opinion). The darker the color the less that you use it.
I hope this helps people :3