you stitch a band of fusible interfacing to the rounded edge (like a facing). When you flip it to the backside, it gives you a nice edge. When you fuse it down, it holds it nicely for you to applique stitch it. You can attach the fusible to the whole dresden or just an inch around the edge. The added weight is very little. You can use a very lightweight fusible. Just watch carefully that you are applying it correctly so that when you turn it, the fusible will be on the outside ready to iron to the background.