For our paintings, we used whatever acryllic paints we had in our paint bucket. I had three canvases (or is it canvi?) given to us from someone who was cleaning out their art supplies. But, I believe you can get a canvas at a craft store pretty inexpensively. Anyway, it took us a week to complete these paintings because we taped off an area and then painted and waited for the paint to dry. We first measured the canvas and marked off the quarters with a pencil. Then it was just a matter of picking complimentary colors of paints and deciding on a graphic to use. I chose this apple.
This is my attempt: