Float Like A Butterfly

I painted this tonight at our Monday night painting group. I didn't bring any objects to paint, so I tore a photo out of a gardening magazine and hoped for the best.

5x7 Acrylic on Canvas Board

This is the first painting in a week and a half that I have been happy with. I wonder if it's because I went back to my old 5x7 canvas. It is because the composition is better with a rectangular canvas? I know now that it is easier for me to paint on canvas than a smooth surface. Maybe I was just having a good night!