The challenge is to use "no lines" in your image. For those of you who use digis, all you have to do is convert the image into a lighter color when printing. For those of you who use stamps, all you have to do is stamp the image in a neutral color such as light gray or beige. The lines will then disappear as you color. Sounds fun, right?!
Here is the card I made using this technique:
Birthday Princess Rio!
Louise Guest DT