Last week I decided to use a stamp set that I haven't used for a while.  This is a nice technique of just cutting up an image and separating it on a background to make it more effective.  So the large stamped square was cut into 4 pieces and then mounted on green card.  Make sure that you don't mix up the images though or it looks a bit strage.  Keep them as a 'jigsaw' that fits properly together.