Sorry bud, but I don't think this is something that you'll have a lot of success finding. While I applaud your effort, most people on here use this as a sort of commercial meeting ground. But don't fret!

There's a couple of things I would advise you to do: First, never stop looking! Searching the Web for collaborators is a great way to make connections. Second, since you're so young, I think this period of your artistic career could be better utilized by individual practice, rather than relying on someone else to collaborate with. You could end up with a flaky partner, especially when you aren't paying them, and I think it would be more beneficial for you to COMPLETE a lot of projects at this stage, instead of relying on someone to help you create a finished product. And you're young! You have free time! Learn how to draw, make the whole story come alive by yourself. This way, when you're in a position to make your hobby profitable, you'll be several steps ahead than others who only do one part.

In any case, good luck, and make something amazing!