I made these with Simplicity pattern #2397. Very easy–just uses
a single square of craft felt for two booties. There are two seams, a very short one in the back of the heel and one to attach the sole to the sides. I sewed the seams on a sewing machine, but it could probably be done by hand, as well. The embellishments are super simple embroidery stitches that even a novice could learn from freely available YouTube videos and the ties attach through grommet holes made with scrapbooking equipment. Quick, fun project!