Unfortunately I didn't, I would have LOVED to, but i don't have the confidence to go that extra mile just yet. The artist was DestinyBlue - you can find her art on Facebook, or DeviantArt - I'd been a large fan since I first met her in person last year at the same expo.
I would love to dress up one day for these events, maybe as something simple like Hashida Itaru from Steins;Gate. Basically anything that would give off the image "this is a costume", without having to push too far out of my comfort zone
How about yourself - ever dressed up for Comic Con, and what do you like about Comic Con?