3Mô Super 77 Multipurpose Adhesive
spray adhesive works really well for gluing the paper to the foam. Hold the can about 2 feet away and apply a light mist to the paper. If you don't apply too heavy a coat it will be easy to peel off the paper when you are done shaping the foam.
The same adhesive is also good for applying sandpaper to sanding boards, wax paper to fiberglass cloth for cutting with out distorting the fiberglass, any paper templates to wood, metal, foam and a variety of other projects you will encounter during the build.