Cosplayers are the lifeblood of geek conventions. Sure, you come for the merch, the panels, the exclusive announcements (and the free swag, of course), but it’s the cosplayers that truly bring these events to life, making you feel like you’ve stepped into a parallel dimension. Cosplay was much simpler when it first began—people would buy pre-made costumes of their favorite characters or cobble together something basic themselves. Today, however, it’s an incredible, well-developed art form . Som…