Make sure not to sew your bag closed ... Iron Wonder Under to a small piece of fabric. Trace the desired shape onto the paper. Cut out and remove paper backing. Place on bag and iron into place.

They can be made from a piece of parchment paper ... If it’s too small, you can always cut off more, but you can’t make the hole smaller. Your piping bag is ready to use.

How to Make Paper Bag Popcorn Making paper bag popcorn is one ... If your microwave is on the small side, you might need to fold in each corner to allow the bag to spin freely as it heats.