I'm in an ATC technique swap and have been playing with making background papers from an article in this book. Here's my first effort. I'm very pleased with it.
I added my own twist to my next attempt. First, paint black gesso onto newsprint paper and let dry completely.
Once dry, use an old credit card and lightly apply modeling paste to random areas (these are the white sections in the following photo). Let dry completely.
Third step is to take acrylic paints and cover entire surface, letting dry completely before proceeding.
Fourth step is to randomly stamp images. Because the paper was still rather dark, I used pigment inks in metallic colors (if the paper had been lighter, I would have used dye ink). Once dry, I sprayed with acrylic fixative to set. This weekend, I will cut this sheet into ATC sized sections for the swap (hopefully that will lessen the glaringly colors of Neon Green and Pink!).