Once you have your foundation chain of stitches in place (see the chain stitch post), you can proceed with the embroidered scalloped edging.
(FYI: you don’t have to have a foundation chain to make a scalloped edge. You can simply end each scallop by inserting your needle back into the fabric and bring it back up next to the insertion hole.)
Scalloped Edging Tutorial
I have used three strands of DMC floss here, but you can used whatever thread in what ever amount suits your project.
The scalloped edging is nothing more then a series of buttonhole stitches. If you enjoy any of the needle arts, this is a great stitch to know. I have used it often over the years for all kinds of sewing projects.
I hope you have fun with this stitch, it really is a very useful one to know and a fun one to play with.