Thanks all great to see you're all still here.
Luann I used a heavy interfacing like Temtex. You fuse all the layers as you go and add the stiffener when the stitching and quilting is complete and iron the front over it.. The hardest part was drawing the circles, well finding something big enough. I tried a bucket but still not big enough so I used a drawing pin and a pencil on a bit of string, I need to find a bigger compass,
Laura's instructions at the end of show 2019 explains it really well.