In September last year, I started to paint on canvas hardboard-MDF (hardboard that has a canvas glued on it). Before that I painted on paper for a while, exploring and finding my "voice" as a painter. I accidentally ran out of canvas hardboard-MDF last weekend, and I started to paint over a an old unfinished painting on paper.
I realized that in some ways, I loose up and am less afraid to fail on paper, perhaps because it is cheaper. I like the result and I think I will do more on paper.