They look pretty cool and much to my surprise once they dried I easily peeled them off of the wax paper and they ACTUALLY stuck so here is how we made them.
1. I taped down printable pictures for the kids to use as patterns
2. I placed wax paper over the patterns and taped it down (the tape isn't required but it sure helps small hands)
3. We used puffy paint to trace over the patterns
4. Wait for them to dry COMPLETELY then peel them off of the wax paper and stick them on the window
Super EASY and FUN...we can't wait to make Christmas ones:-)