Have you tried using Google to look up conventions in Colorado? Or posting a thread in the Seeking Cosplayers or Other Events forums?
Also, it's not safe to give out personal information on the internet, especially for people as young as you are. Please, be more cautious. :]
"Katsu, every time I see your avatar I automatically think, 'Wow, she's really annoyed today!'"
Done | Red Mage Viera
In Progress | Vault 34 Jumpsuit | Sniper Wolf
Planned | Catwoman | Snow White
Cons | ALA | AOD | Cherry Blossom Festival | Fanime