Well, I improved my painting techniques, so I decided to post a new ''tutorial''
I start with a sketch, then with the base color, then add shadows and light,Then I put details and details,more shadows and lights, and when I'm satisfied, I put more color and contrast.When I draw the shades, I let the brush in ''multiply'' mode.
I used two layers : sketch and colors
I do all drawing in the ''color'' layer and after I delete the ''sketch'' layer.
I always start with the darkest color, it makes it easier to color
,because usually the drawing has more shade than
light.Sometimes I use photoshop or photofiltre to finalize.