New Brevoort Formspring

Hey Tom! Is it possible for me to make a superhero and submit it to Marvel, to check out if he/she's good and even use her/him? Like.. If I would make a superhero/villain, with a name and story and costume, and it is to your liking, is it possible for Marvel to use it as a new character? I make Superheroes for fun and as a hobby, and would be happy if Marvel could use them. If so, how can I contact you for my project? It's free btw! ^_^ Thanks!