““The old master oil paintings were usually done in transparent oil colors on top of a black-and-white underpainting, which was often painted in egg temperas. My version of this technique was to start with a watercolor underpainting, which is fast drying like tempera, but I have an easier time controlling it. Then I seal the underpainting with a coat of clear, matte acrylic medium. That keeps the oil paints, which come next, from soaking into the paper, where they would turn dull and flat. Instead, thin layers of transparent oil paint can be smoothed into glowing colors and bold, glossy surfaces, with a depth and space that I don’t think can be gotten any other way. It isn’t easy to do, but when it works, the results can still surprise me.””
