For all of my armour on this website and all of the content on my youtube, i used pepakura itself. It is a wonderful program that allows you to veiw and/or design PDO files/3d files that are kind of like little puzzles that make 3d peices of armour or cosplay. You can get files for guns, armour, weapons, you name it, its been made.

 You can download pepakura veiwer and designer at this link: http://www.tamasoft.co.jp/pepakura-en/download/index.html

 Here is a video on how to download and use Pepakura veiwer, i will be posting a video on how to use the designer once i get the hang of it myself. enjoy!