Texture Painting - Game Character Development with Maya - page 549

Tip
Remember, when texturing with darker tones, to use darker shades of the
color you are painting onto, rather than black. Also, experiment with
slightly different tones; for example, try making darker areas of skin
slightly redder, and see what results you get.
When you're ready, create a fourth layer called Shadows. Now you can go in and add the
darkest areas to the texture, while also implementing some of the minor shadows ( Figures
9.13 and 9.14 ) .
FIGURE 9.13 Kila with darker tones and shadows added (See page C4 for color version.)