To make this background I applied different colors of Adirondack paintdaubers to a craftsheet. I sprayed them with a little water and perfect pearls. Then I put my cardstock in the paint, turned it a 180 degrees and dried it with my heattool. You can repeat this process as often as you want until you're satisfied with your background (prevent colors to get muddy don't use the same paint too often and dry in between layers of paint).
For this card I used these stamps:
World all her own
Have fun stamping!