Several years ago, when I started to face my quilts instead of binding them, I developed a method that gave me flat corners instead of the lumps that occur when you turn back one side of the quilt, then turn back the adjacent side on top. The key was to slice off the bulky inner layers of the quilt -- the batting and the backing -- a little bit inside the corner of the quilt before turning the facing back.
This method called for only a single thickness of facing at the corner of the quilt, to minimize the bulk. I cut that corner piece with a curved edge, and it looked pretty neat on the back! I was so proud of this method that I wrote about it in the American Quilter magazine, and many people, including Suzanne, have told me that they have used it since.
So why did I fall out of love with it?
To prove it, here are two photos of slicing the corner. The pink is an old photo from my old method; the blue is a new photo from last week with the new method. At the key moment in the process, they're exactly the same.
The reason both methods work the same is that there's only one layer of facing at the corner, since I cut off the second facing strip an inch before I got there.