Sometimes you just have to go for it and see what happens. One of the wonderful things about watercolor is the beautiful textures you can make. You just have to let go. I wasn't quite sure where I was going with the background except I was going to use mostly the colors I used on the pumpkins or darker version of the colors (burnt umber vs. raw umber) and I wanted it to be dark so the pumpkins would pop out. You might know that certain watercolor pigments act differently and the same color in another brand can act differently too. So the Sap green I used in the background left some interesting patterns and I'm currently using Senelier Cobalt blue instead of Winsor & Newton which I prefer. This blue is chalkier and seems more opaque which could be a good thing depending on what you're doing. As I was painting the b/g I kept thinking about collage paper like what Eric Carle makes and uses in his books. Anyway it was fun and if you approach your painting thinking shapes and filling those shapes with color/textures, it could be a great learning experience!