That is so beautiful! I did a quilt with a scalloped border and had to mitre the inside corners. It's a bit time consuming but not hard at all. I cut my binding on the bias to go around the curve and inside point. Also, if you're a bit nervous about it just practice on a scrap piece of fabric. That's what I did and I believe it helped me more than anything. Again, I love the runner!!! PS. I could show you how to do it but for the life of me I can't explain it! lol...