Here are two pictures of an underpainting that I have been working on. The first is an earlier stage of the process (showing the original under drawing in silver point) and the second is nearing the end of it. The value scale ranges between 4-9 (4 being darkest values and 9 being lightest values). I am trying my best at using the golden spiral as a compostion tool. It is a 24X36 inch painting. I don't imagine this one is going to go very quickly but you never know.