I have made a few. I used some velcro where the two parts overlap in the back, and one time I installed zippers (before sewing the back to the front. I quilted them to match the quilt they went with using muslin on the inside. I made flanges around the outside edges. This is actually a simple way of finishing them, quicker than binding or cording. To make flanges add borders front and back in whatever width you like, then sew the front and back together, right sides facing. Turn right side out and iron out the edges and corners. Then sew the required distance (2 inches or so) all around, through all layers. I'm probably not making that very clear, but it will be pretty easy to figure out.