Step - 2: How to Back Embroidery Hoops
Firstly, cut off any excess fabric around the hoop so that you are left with a 1cm edge. Use a running stitch to gather this fabric neatly.
Next, on a piece of felt, draw around a hoop the same size and cut out. Pin this piece of felt to the back fabric.
Using a blanket stitch, stitch the felt to the back of the hoop, catching both the felt and the fabric underneath.