Quick sketch time. Light changes in 20 minutes, so one has to work briskly, and making quick decisions. To quote Dan McCaw, you must paint, "like your house is burning down!" It's considered 'alla prima', until it's 'touched' or 'glazed', in the studio. One hopes it will be 'alive' and not need to be, 'revived'. Alas, art itself can be a strange, unpredictable thing.
Santa Barbara Sunset sketch in progress. 7x9 oil, 2010