The texture and quality of the skin here is... absolutely amazing. It's like you could reach out and touch the skin. The use of shadows and light, with the composition, is just perfect. I can't beleive how realistic it is. People would pay for portraits like this! XD
I used Cream, GoldenRod, LightPeach, Peach, Burnt Ochra, Cool Gray 70%, Warm Gray 30%, White, Crimson Red, Pale Vermillion, Light Umber, Dark Brown, Black, Indigo Blue, Violet Blue and Tuscan Red. It's all about Layers.