This was a painting I did as a demo for my last painting class. We worked from a stock photo. It was a very dramatic sky and a good exercise. We departed from the photo and every student finished with a good painting. The common element was color as we worked from a limited palette and I mixed the color for my demo and placed a small color note on each of their palettes. I usually don't work from photos, but with the weather change and the drama from this stock selection, I felt it was a good solution. Stock photo was only $10, with full copyright.