Start networking with people who have some of the skills you're looking for. As in, go in Facebook and start searching for groups of amateur filmmakers, that sort of thing.
Be prepared to change your vision. A lot. Collaborative artistic efforts are just that - collaborative. That means a give and take. You're not JJ Abrams. You are not in a position to dictate terms.
And be equally prepared to never have enough money. Even if you try crowdfunding, most people will not take much of a chance on an unknown quantity.
You can also work with your teachers. What sort of arts program does your school offer? You might be able to take basic filmmaking or illustration.