
Here is a plastic bag fusing tutorial that says you can use office paper instead of parchment paper. This is very exciting!
Here is my attempt, made from a Forever 21 bag, San Francisco Chronicle sleeves, and a picture from the cover of Harper's:

Things I learned:
1. It is good to have parchment paper. You have to be careful when you use separate sheets of paper.
2. It is good to have interesting plastic bags.
3. It is good to have a sewing machine.
4. Plastic bags totally do fuse together! Awesome!
