These little gems are so easy to make! I really would give credit to the site where I saw these, but I didn't write it down and can't find it again. These can be any size, just be sure to cut the tip of your heart at a 90 degree angle, or it will not fit over the edge of the page. You simply cut a square and fold on the diagonal for the back! So easy. And if you are like me, you have loads of fabric scraps that you hate to toss, but cannot find a use for.
You could probably use other shapes if you want as long as they have a right angle for placing over the edge. Maybe a diamond shape, a cotton ball on the tip would make a Santa hat, or you might make the tip a nose and make a dog, reindeer, mouse, etc. Play around with this a bit and have fun with it! And save those scraps!