When I was asked to do this project I was given a sheet of rough plywood, 4'x8'. I chose to work using the primary colors (Blue, Red, & Yellow) and from them mix the others. The paint is much different from what I normally use and it took some getting use to. I also used gesso. Using a garage without heat added to the challenge.
Am I happy with the finished product? No. Unless I do something on it between now and Monday the project is finished. On Monday it should be erected with the other plywood Christmas Cards on base. It was a good learning experience for me.