Hi. I'm new to the forum, but I did my first scalloped quilt this year. Believe it or not it was pretty easy. I recommend you follow the clear directions found in Quilting: The Complete Guide by Darlene Zimmerman; page 205 - 215. I was pretty nervous about it, but I bought some wide adding machine tape to draw my border on & double check my measurements. This I pinned to the border & stitched over to get the scallop down (like doing paper piecing) . I used Zimmerman's Easy Scallop tool (also comes with easy-to-understand directions) and the scallop was near perfect.