Sketching the outfit
I decide that I want his clothes to be denim. I set up the colours for his straps and roughly sketch where the folds should be in his clothes. I also use the light source to establish where the shadows and highlights should be. Picking the material for the clothes also helps me know how the fabric should be textured, where the folds should be, and what the highlights should look like. Denim has a particular look and feel, so in this stage I try to sketch out the qualities particular to the material. After sketching the clothes, I work on a detailed sketch of the torso. The more detailed these sketches are, the faster it is to paint and polish them afterwards. Once again I use the light source to establish the location of the shadows and highlights on his chest, stomach and arms. I also work on his anatomy and sketch the muscle definition of his stomach.