(Donna Downey recommended some great ones). There is so much you can do with these brushes that it will make your head spin. To start off a digi-collage I bring in several backgrounds or sections/areas from these backgrounds or artwork onto a black document. When you get them in and arranged then start adding the brushes and changing colors and sizes and moving pieces around just like you would do if you were using the real paper. It really is a lesson in restraint because there are so many possibilities that you just can't quit. That's where you have to let your creative self tell you when it is finished. And if you don't like it you can delete a few layers and try something new---no gesso here---just the delete button!