If you've never done the shaving cream technique you have go to try it. It's messy but I love the results.
It works best with non-glossy cardstock. Take regular shaving cream (not gel), the dollar stores usually carry it. Spray some cream into a flat pan.
Take a couple of different colors of reinkers. Here I used blue and green for water. You could use orange and purple for halloween, pumpkin and brown for thanksgiving, etc.
Dot the reinkers over the cream and, with a toothpick, or skewer, or a pencil, swirl the ink through the cream until you like the way it looks.
Carefully lay your cardstock into the cream, lift off and wipe with paper towels.
You get the most amazing background paper!!