You can scale them to your liking using Pepakura Designer and you will need the Pepakura software in order to open the .pdo files.
Metalfist included some tips in the Readme file for this project.
The models included are:
– Skaarj warrior standing
– Skaarj warrior sitting and inspecting claw
– Skaarj Trooper
The Instructable with download is available at http://www.instructables.com/id/Skaarj-Papercraft
Metalfist has also created a set of Unreal Tournament Papercraft weapons! Everything from the Bio Rifle to the Translocator is included.
You can find more information and the download at http://www.instructables.com/id/Unreal-Tournament-1999-Weapons/
If you would like to see your content posted on our community site, Facebook page and twitter, check out the Epic Gamers forum. There you can post your tutorial videos, cosplays, fan art and fiction, anything you would like to share with the community. For more information, check out this welcome post. To see more artwork from Epic Gamers, be sure to catch the EpicGamers group on deviantART.