Now we’re finally ready to get to the coloring.
In this case, for no special reason, I started with the skin.
So, how are we going to create a believable skin texture?

The answer is: in multiple layers.
We will use a light 'flat' color for the basic skin color first.
Then we will add shadows and texture with a dark color; to make it look lifelike and three dimensional.
Lastly we’ll add “life” to the skin by adding some reds.

Since it's a good idea to start with lighter colors and then gradually transit to darker tones, for the first layer we’ll go with a light ochre.

At this point, you should be conscious of light situation of the scene. In this case, the light source should come from the upper left hand side.