Thank you all again for so much help! I would love to use the flannel but I don't know if I can get it in pure white and that's what it would have to be, so it's going to either be muslin or the fusible interfacing thanks for clearing up that mistake!!). The big thing is I have to hide the threads on the back so whatever will work to do that is what I'm going to use. I guess it's time to get out the embroidery book I bought a few years ago too! Again, my thanks to all!!
Thimblebug6000 - good to know about the heat on the iron cause mine is HOT!