2. Place the felt over a piece of calico and mount both of them in a large hoop. The hoop should be large enough to accommodate the whole ribbon embroidery. My piece of felt is too small for that hoop, but with the large piece of calico I managed to mount it anyway. Even if you’ve got a sufficiently large piece of felt, use cotton fabric to support it anyway. The felt is easy to deform, and the fabric beneath it helps to keep the shape.