Considering this is your first time going out, why did you choose quarterback [one of the most competitive positions] to play for? I would think as an undersized eleventh grader, you'd start as a special teamer and try to do the Rudy thing. You know...work your way up.
Either way, good luck with the process. i'd try out for as many positions as I could because, like I said, there is only one quarterback. But if you have the hands, maybe you catch on as a receiver [a lot of quarterbacks make decent receivers if they are quick because they know the routes].
-wtk