This is a very pretty piece of your quilt. You are doing a great job. Since it will be placed as part of the top onto muslin You would want to consider covering each piece with the fusible. You may want to consider a purple fabric glue stick if you only want to go around the edges. Just remember with the glue sticks you still have to press, iron, the pieces in the right place on the muslin. I can't wait to see this one finished.