It is done on a stretched canvas, 16X20, and is done in acrylics, mostly. I used various gel mediums to add texture and also used some water color. After I decoupaged the maps on the canvas, I sketched the big trees using water color pencil. I then was able to sketch in the other trees and path, etc. I watched a couple of You-tube videos about painting forests and sunlight. Then I worked on it with various acrylics and mediums.
It was so much fun that I am already starting another painting for my daughter as one of her graduation presents. It will be totally different from this one.