I am always trying to get a series of photographs of the process of creating a painting. I take a first photograph of the painting's beginning, and then just get into the painting, realizing after finishing that I forgot to take the interim photos. These portraits of two German Short Haired Pointers are a case in point. I could have taken another, earlier photograph to start with and the last two seem pretty close looking at them now. The variation in color between the last two photos is due to the photography, lighting, digital imaging etc.
This first photo is the finished painting of Courtney.
These three show some of the changes the painting goes through.