I only have an ink jet printer so when I print the files for final, I go to kinkos and have them print the files out on 32lbs paper. It is a bit thicker. Laser printing is the way to go! Pictures/ documents printed on inkjet will run if they get moisture on them.

A technique that I used to create walls was to take the wall sections and glue them to foamcore board with 3M adhesive spray. I don't use sissors to cut them out, I use a brand new razor blade and a straight edge.

Good luck and welcome!