How? Well besides the extreme lack of experience. [smilie=armata_pdt_26.gif]
Legal restrictions. Minors are also looked at with a negative disposition to begin with, not saying you but as a general rule minors can't seem to grasp the fact that our airsoft guns aren't toys, airsoft is nothing like call of duty, magazines aren't called clips, and the rules must be followed.
It's a hard road trying to get into an adult sport as a minor. My advise to get into the sport at this level, spend the money to get into the private fields. Meet people and prove your maturity through your actions rather then your words. After you've become acquainted with the people who plan games ask to join their games via PM. If they say sorry but no then take it for what it is and don't complain about it.
Like some of Rebel Union's free games at their field.
Rebel Union free games are 18+ for the reasons i've said above. They do hold games at fighter town. It's a good place to start meeting the people who run rebel union.