Spray-painting is great fun, as you can get all sorts of effects depending on the direction and intensity of your spray-can. We made stencils by designing them in Adobe Illustrator then printing them on card and cutting them out with a craft knife.

The more simple your stencils are, the more effective they look. Just remember that ideally you should spray outside, but if you are going to spray inside, make sure you do it in a well ventilated area, and cover the floor/ table with some old newspaper to avoid a hefty redecorating bill!