How to go off a jump and do a 50 50 off of a box correctly on a snowboard?

i was like that before but trust me get a helmet, i dont like them but i wear it just when i jump, but whats helpful is just try to land right on the bar dont try to turn your board and get a 50 50 cuz youll just miss if you dont hit the rail just hike back up and try it again its not so much the actual rail its just how you take off, if you take off bad your prolly gonna fall so line up your take off