In the first image is a color sketch I have done on top of the drawing from the last post- I just scan the drawing and paint over in photoshop until I get the colors I am looking for. You need a good printer to use this technique for traditional painting. This is because the printout has to be exactly the same as the sketch on the monitor, or it is of no use.
Here I have transferred the drawing to my painting surface. I am painting on Rives BFK paper that has been gessoed white, and then a wash of brown oil has been applied and allowed to dry. I do the drawing in hard colored pencil, and then start to block in the shadows with oil.