There are books on crazy quilting and they probably tell you how to finish them. I recently made one and put batting in it to help hold the embellishments up. Then I put what I call a 'knife edge" on it. I guess others here call it birthing. I use knife edge because that is a finish you could use when making a pillow. Anyway, I hand quilted it in various places to hold front to back. I didn't use a pattern, just random places so it was evenly distributed through out the quilt. It was only a wall hanging.