Recently we've had some remodeling happening in the apt and it's prevented me from working on a larger paintings. In order to work while the construction goes on I've started a smaller head-and-sholders profile. I'll be doing this one under natural light by the window instead of using my lights. Here is the drawing I did in preparation:
I took this drawing and blew it up at Kinkos to the size I thought would work for the painting (If you do this run a test piece of paper through the scanning machine to make sure it doesn't leave marks). It's about 3" from her chin to her hairline with over all dimensions around 10" x 10". The painting I wanted to be just under life size. The blow up seemed to work when taken to around 5" from chin to hairline. The painting should end up about 15" x 15" at that proportion.