So, information! Dark Horse plans to put North American fans' fanart for Evangelion in the upcoming releases of Neon Genesis Evangelion: The Shinji Ikari Raising Project, an AU manga based on a dating sim game taking place in a world where Shinji, Rei, and Asuka are all classmates studying with their teacher Misato...until little tidbits from the original Evangelion world start seeping in. Like the EVA units themselves.
For those less artistically inclined (like myself), they're also accepting letters, and all you have to do is submit them to firstname.lastname@example.org. And maybe you'll get to see them in print!
Deb also notes that there's a preview of the manga up at Dark Horse's website, which you can check out here. Enjoy!