When decorating my daughters' bathroom in ducks and daisies, I didn't want to use a border in case I wanted to change it when they got older, so I painted the walls a light sky blue and then used the foamy paper to cut out large hand drawn daisies (just five petals or so).
Then I used the yellow sticky foamy paper to cut out circles that would be the middle of the daisy. I stapled the white daisies about 4 inches down from the ceiling and a few inches apart and then put the sticky yellow circle over the staple mark.
I created my own border. Very cute and three dimensional because they somewhat stand off the wall. And very inexpensive and you can change this to fit about any theme!