Mixed Media Canvas Before adding the Gesso, showing all the yumminess not sprayed and painted. I thought that you might enjoy seeing the process of a Mixed Media piece I did in memory of my Mother. The top Canvas is before adding Gesso, and spraying with Lindy's Stamp Gang Sprays. Hope you like it. I wanted to show you how you can apply any medium to the Canvas, then add Gesso, and paint, spray, and have fun making it your own.