Assuming you start doing shows and like it- another good step would be a college MT intensive next summer. These can be a GREAT way to help understand if you want to pursue a BFA degree (which is actually different from doing shows) Some require an audition, which can help give a feeling for college auditions. Some schools with good summer programs: CMU, NYU, Ithaca, Northwestern, Syracuse, U of Michigan, CCM, TX State.