So those last two pictures are just to show the helmet jewel that was included with the Pepakura file. I highly doubt I'm gonna put it on the helmet though because I have NEVER seen a Dark Angel with a jewel on his forehead, it's more of a Space Wolves thing. Oh! By the way, credit for the Pepakura file goes to Nintendude. If you want to download the file to make yourself one go here:
http://pepakuracollection.wikia.com/wiki/Warhammer_Pep_Files
P.S. If you think the helmet is easy and you can whip it out in a day... you a VERY wrong! Trust me..