I'm not getting to Joann's anytime soon as the nearest one is an hour away and my boyfriend takes me to quilt shops as I don't drive...and right now having him drive two hours up here and driving another hour to get to La Crosse is unrealistic. So I bought the Wal-Mart fabric online.
If its really not suitable I can always use it for practice projects. But I think it would have to be incredibly horrible to not be used in the wallhangings since the muslin is not going to be visable once all the stained glass applique is put on top of it and the wallhangings are not going to be used like a quilt. Ah heck...I'll probably have about a yard or so of leftovers anyways to use for practice stuff.