First I cut up my squares 3.5" x 4" (in retrospect, I wish I had cut them larger. It would have made the paper-piecing less tedious as I tried to make sure I covered each bit of the arch. I would probably recommend making 5" squares just to make it easy on yourself).
Then I chose a short stitch length and did my paper piecing. If you are doing this, make sure you double check the positioning of each piece so that your arch is completely covered when you flip the fabric back over.
Then I trimmed each arch to the actual size (my templates included the seam allowances) by cutting along the dark line that shows through the paper.
I made all 16 arches, and started piecing it to my background fabrics. One block is finished, 3 to go! Love the way its shaping up!
What should I make of my SG blocks?