I had the opportunity to attend an open painting session with Craig Srebnik and some of his painting students today. We were urged to bring a painting that was not finished so we could finish it. I brought in a figure I'd painted in his class from a reference photo. Craig showed us how to apply a thin layer of safflower oil over the dry painting, so that it accepts new paint easily. I painted over my original painting, paying attention to the principles of turning form and giving it better color and light. It's still not completely done....but it's getting there.