Way cool, having been a "Fish monger" for 12 years I saved up end pieces of freezer paper for inexpensive painting palet. Now I have another use for all that paper I saved. By the way, the paper will not gum up your needles because it is not sticky until you heat it up to press your fabric. After it cools it goes back to its original texture and will stay stuck to the fabric until you pull it away.
Great idea and thank you for sharing it.
:-D