I've seen a lot of folks use a glue gun on here and I wonder why. I would think having all of those little "webs" from the glue gun would get very annoying and be all over the place. Remember back to the days when you were in elementary school and you glued something onto a piece of paper. What did you use? Elmer's School Glue. There is a LOT of positive things that can be said about using white glue.
If you want to go to the next step above Elmer's and want to stay with a water-soluble white glue, use what I use on all of my paper models. Go to Hobby Lobby and get a bottle of "The Ultimate" glue. It should cost about $4 for an 8oz bottle. It's a white, water-soluble glue like Elmer's, but has an adhesion rate (time it take to dry after sticking two pieces together) of about 10 seconds. It's called the Super Glue of white glues. Once you use it, you'll never pick up a glue gun again. Less mess, thinner joints (you can easily spread the glue across the tab as opposed to trying that with a glue gun), no webbing all over the place and best of all, the glue won't burn you or won't burn the house down if it falls off of the table.