Well, I live in California, I'm in my late 20's and have been costuming for about 5 years or so.
Right now, I'm working on a Mystique costume (from the comics, with creative license used) and soon Catwoman (cross between the Batman Returns costume, and an early one from the comics, with some of my own touches added). I plan to make a Nightbird costume for myself (she was in one episode of Transformers, Generation 1) and an Optimus Prime costume for my b/f (I'm thinking of basing it off the 20th anniversary action figure). I don't know when, but I will be tackling them at some point.
Here's My Website
I'm gonna try to keep an eye out for web sites devoted to TF costumes, and I'll post these links when I find them. If others could do the same, I'd appreciate it ^.^