Here are two versions of the same idea. What do you take from them? The one in green in yellow is tempera on cardboard. The one in brown and yellow is oil on luan. I started out using oils but quickly changed my mind. One was cost and two was the amount of drying time between layers. Although I give my students a hard time about being impatient with their projects, I too fall into that catagory sometimes as well. I suppose I am a victim of the culture. Instant gratification...stupid dial-up connection....when can I get high speed?