Step One:
On a new layer, pick a base color.
Step Two:
On another layer, pick a darker color and create shadows. Hair on the face, light source, facial features, etc.
Step Three:
On another layer, create another set of shadows to emphasize the other shadows.
Step Four:
Smudge it!
On a new layer, pick a base color.
Step Two:
On another layer, pick a darker color and create shadows. Hair on the face, light source, facial features, etc.
Step Three:
On another layer, create another set of shadows to emphasize the other shadows.
Step Four:
Smudge it!