Skydive at 16 ? HELP !?

ok, so i guess you could say i'm a bit crazy ! but for my 16th birthday (next month) i want to go skydiving. It looks so amazing and i've wanted to do it for a while. but as crazy as i am, i'm also a chicken ! if i go to skydive i know i will freak out in the airplane and refuse to jump because of my initial fear and nerves, does anyone know how to control my fear and mostly my nerves, because i really want to do it... PLEASE HELP :D Thank youuuuuu.