First I start out by drawing the nose, bridge, and chin with a brown pen. This helps define where everything else will go. Go crazy with different types; it will give each figure character.
Next, I define the ears a little better with the brown pen. Again, don't be afraid to make different shapes.
Next, I do the eyes in stages. The picture below shows, from left to right, the steps I follow.
- Paint an almond shape in white for the eye. Don't worry about being perfect as the other colors will define the final shape.
- Paint the iris color. Most should be brown, unless the ethnicity of the figure dictates otherwise.
- Here I have painted the eyebrows next using the figure's hair color (or a darker shade).
- Paint a thin black line on the top of the eye for the eyelashes. Paint a darker shade of flesh on the bottom for the "bags" under the eyes.
Finally, I paint the mouth. As I still don't have a satisfactory method there, I am going to cop out and leave that for when I do. For now, you can draw a thin line with your brown pen so the chin won't look like the mouth.