Click on the following links for some paper airplane design ideas.
https://sites.google.com/a/bisdmail.net/lbrungardt/ultimate-paper-airplane-
sites.google.com/a/bisdmail.net/lbrungardt/ultimate-paper-airplane-competition
http://tinkerlab.com/how-to-make-a-paper-airplane/
http://www.artofmanliness.com/2014/09/16/how-to-make-the-worlds-best-paper-airplanes/
http://www.foldnfly.com/#/1-1-1-1-1-1-1-1-2
http://www.diynetwork.com/made-and-remade/learn-it/5-basic-paper-airplanes