I'll agree with everything that's been said, scrap the paper and start again with card. Not only will the paper collapse it'll be almost impossible to use resin/bondo on without it loosing its shape. You don't need hot glue, personally I use all purpose adhesive like Unibond, costs about £2. It's a little messy to get used to but it has about a 5-10 second drying time then it goes rock solid, also it dries as a gel so you won't destroy brushes!
-Elliot.
-Elliot.