I love to paper piece but insteade of using paper for the foundation I use muslin. That way I don't have to rip off the paper. I just trace the pattern from the paper onto starched muslin and it works like a charm. But if I am doing anything that isn't going to be washed like the 2" pictures I do for greeting cards I do use card stack and I don't attempt to take off the paper backing. It's a great way to make a lot of fun projects.
Looks like you are well on the way of making many wonderful quilts.