I begin to break up things into broad planes. As you can see, the face is still rather grey in chroma. I always find it best to work less chromatic and darker in the earlier layers. That way, lighter and more chromatic areas will be the thickest areas of paint as you build up more layers. The opposite is true of alla prima however. Always start overly chromatic in the beginning of a single session painting as it will gray as the colors mix together. This stage is about an hour and a half into the painting.
The piece as of now after a little less than 2 days of work. The photo is showing it quite a bit grayer than it actually is. I will continue to build paint and correct things, and break down forms as I go. This is the painting's "ugly stage." Paintings to me are a lot like kids. They start out attractive and exciting, then they go their their frustrating ugly pimply teenage years, and finally they look normal again whey they are all grown up.
If you have any questions about my techniques, ask them here.