I was getting tired of my stars and stripes/firecracker/patriotic decor. I usually don't bust out my watermelon stuff until August but I was ready for it now so today I made the change. I just recently sewed a new pennant banner with watermelon inspiration. I cut my triangle pieces out of different patterns of red. I cut a 1 1/2" strip of green fabric to sew on the tops as the rind part of the melon. I just sewed it over the top edge of each triangle with a wide zig zag stitch. Then after I had a bunch of those sewn I cut them into sections of 3's and 4's and pinned them onto what I would use as my backing fabric (which in this case was green canvas). I then sewed around the outside edge of each piece (sewing it directly onto the canvas). I cut around each triangle with my pinking shears (well not around each one exactly but around the entire row).