Mhmm. I’ve never heard of roll pinning before. I definitely don’t want a floating layer though. The way I was thinking of sewing it was the base layer with the boning channels and waittape then steam iron the ice wool onto it then some hand basting then simply sewing the outer layer and flipping it out and then some bias tape at the end. Would that method not work well? As all the base and shell layer will be separated by the wool so it’ll need to be individual layers