I never start with thumb nails I make.. than respond to that start. It works well with painting as I can develop the painting as I go along. I think I really need an idea or image to start. It is a dialouge that is created. Due to my impulsive nature it is really hard to complete artworks. They often are left unfinished. So, upon reflection, I need to preplan enough time so that the art making is complete in one sitting if I am looking for closure. Randy in Maine