This image was created mainly by using the "Blob" brush in Illustrator. I hadn't used it before; what it does is create a fill when you're done painting with one color. As opposed to the Brush tool, which creates individual strokes. What's nice about the Blob brush is that if you're adding to an area with the same color, it automatically joins with the previous strokes to create one filled area. You can apply gradients or gradient meshes to your filled areas. I added some trees and clouds using the Symbol sprayer. Fun!!!