I applique using 100% cotton and use needleturn applique, so having the 1/4 inch seam built into the piece is important to me. I have done some applique using iron on, using steam a seam. But I find I don't like the stiffness and prefer to applique by hand. I haven't thought of using felt or fleece for applique, but I think it's a great idea and I will have to remember it! Good luck with your booth!