Originally Posted by
Prism99
Insert a narrow piece of fusible web (1/4" or less wide) under that top fabric where the seam will be. Iron to fuse the perfect miter into place. Turn over and trim the excess fabric away. Sew on the press mark.
I love the look of multiple mitered borders.
I do mine the same as above, except I use Elmer's Washable glue to secure the miter instead of interfacing, and while I also sew on the crease, I don't trim until after I've sewn and am able to check that the miter is still perfect.
'Cause, my luck, strange things happen between the ironing board and sewing machine, and then there isn't any fabric left to fix the problem.