For this card I painted white Gesso on some textured blue Bazzill paper (from our monochromatic packs!) with a foam brush and let it dry overnight. Then I randomly stamped my images with Palette Noir ink and came back and laid some color down with my Tombow markers on select areas. I could move the markers around with my aquabrush to give it a watercolored look.
Stamps used: Gerbera Daisy (now marked 25% off since it's retiring!), Vintage Backgrounds and Fanciful Vintage (which is the Stamp of the Month for April so it's on sale for just $14.95)
Hope this encourages you to give collage style stamping a whirl! It was easier than I thought and I can't wait to play some more.