...continuing from previous posts...
The Sketch
Part 1 (background)
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Painting skin can be tricky. Here's an example from my current painting, "Gemini." This basic technique can be used for a variety of other skin tones by experimenting with variations for the shadows, and the main glaze.
Most of the time I use combinations of cooler colors for the shadows. Greens, purples, blues. For the main glaze, I use yellows or browns, mixed with a touch of red and diluted.
In this example I'm using some non-standard pigments (
Kremer) which were being used throughout the rest of the painting as well. The WinsorNewton colors (WN) are fairly standard and can be found in other brands as well.
Base layer of shadowsWith a mixture of the
Red Cabbage Blue and
Elder Purple, diluted, I paint the shadows. I find it easier to do shadows first because when the main glaze is laid on top, the shadows get smoothed out nicely. If they are painted on top, you might run into problems of lifting and splotchy looking skin.
Main GlazeWhen that has dried, I mix together the colors for my main glaze and swipe this on top. I make sure to leave some edges of white showing for highlights. Also it can be useful to leave bits of the shadow layer showing through as well. The cool shadows and the warm main tones side by side make for interesting contrasts that really bring out the depth.

For this particular image I did mix a bit of opaque white into my main glaze mixture. I don't often do this, but I wanted the chalkiness that this would add to the glaze. These two figures are almost like statues, and a semi-opaque glaze over the purple tones adds to this effect.
Over the warmer main glaze layer, I also did some light glazes of
Stinging Nettle Yellow, which has a faint greenish hint to it. This provides a more bronze touch to their skin as well.
Emphasizing the Deepest ShadowsWith a fine brush, I go back and emphasize the deepest shadows with a more concentrated mixture of the original shadows color, also mixing in a bit of Burnt Umber or Payne's Grey needed for the darkest areas.
