Nice quilt! Look at several YouTubes to see how to do this--I had an instructor in a class for another quilt project show us how she does scallops--can't remember all her math, but basically she makes the corners circular so that she can equalize the scallops to fit on the sides/top/bottom. I've only done one scalloped edge--I used a paper plate as my template and frankly it was too "deep" of scallop--think a gentle scallop is better and looks better too