I teach sewing and painting and I also sell things that I make. I've never considered that any of my students might copy some of my designs and start selling them as well. Everyone has the right to sell what they make, so do I really have a leg to stand on? I suppose it wouldn't be quite so bothersome if a specific item wasn't made in the exact same fabric that I used with the exact same embellishment on it. That can't be right, can it? What about making my exact design and embellishment in a different fabric? What do you think?