Id say promoting cosplay related stuff is generally allowed, and since this is crossplay related, i see nothing wrong with it being here. I also cant see any other sub forum where this would fit.
It was just the lacking context that was bugging me a bit.
That said, i would participate, but i live in europe and dont have the money to just fly over and go there on a whim.
Female Natsuru Senou (Kämpfer) at Gamescom 2014
Hatsune Miku (Vocaloid)
Black Rock Shooter (Black Rock Shooter)
Char B1 (Its a TANK, its not from an anime, unless you mean Girls und Panzer)
Eucliwood Hellscythe (Kore wa Zombie desu ka?)
Kaito Kid (Detective Conan/Case Closed and Magic Kaito)
Ayumu Aizawa (Kore was Zombie desu ka?)
Haruhi Suzumiya (The Melancholy of Haruhi Suzumiya)
Shinji Ikari (Neon genesis Evangelion)