I recently did a mitered border with a stripped fabric that was about 10" wide. I made a HST cornerstone with the striped fabric and then sewed it on . It was easy to match the strip using the smaller square of fabric. It actually made a perfect miterd corner this way. The 10" square piece for fabric made it easy to work with instead of flipping around the quilt top and all that fabric. You really can not notice the extra seam for the cornerstone. There are afew more seams this way but I think it is really less work.