I read this tip somewhere, but I can't remember where. Sometimes a sticker or rub-on looks great against the white (or other color) background that it comes on, but, when you put it on the scrapbook page, it doesn't stand out against the background color. It's hard to predict, of course, but, sometimes it's easy to see that it would be better to put the sticker or rub-on on a "matte" in a color that makes the sticker or rub-on stand out, and then adhering that "matted" sticker or rub-on to the background paper.