I mentioned my struggles with the new technique to a long-time quilter. She leads the local 4H quilting unit, and she shared some advice that one of the judges gave her at the fair. Instead of clipping the corners on a diagonal, clip them parallel to the line of stitching as shown on the right side of my drawing.
After, the corner is clipped, it will look like this.
The corners of the my sunflower hangings were trimmed this way. Both hangings included a layer of Craft Fuse in addition to the normal ingredients of a quilt sandwich, so the seams are really bulky.






