Cosplay, can anyone do it?

I saw a CNN clip about Commic Con, and OMG, my imagination is like totally captured ! Wow!

I was thinking that if I get involved in it, I would like to be "Katia" in my girl rambo story. Of course that means losing the 30lbs I have been storing on my body, but I can just see myself in a butt length Black wig with blood red highlights, a black costume with black leggings with all sorts of dials and vents on the leggs, a sexy top and a holster for my "Noisy Cricket" and of course my enhanced sword! No stillettos, though, you can't really run and fight in those things!

What do ya think? I know nothing about Comiccon.

Gwendolyn