Ive been riding for 2 years now and cant properly hit a box or dirt jump. I usually ride just street , but im not a beginner. I learned 180s, bars, 360s, 3 taps, tail whip on banks(land sitting on my seat) and 180 bars and more. But whenever I go to ride dirt(not often at all) my body is fully extended in the air and i start to lean to the side in the air and I cant land. Almost everytime this happens. I can hop high and stuff i just cant maintain balance in the air. I think it might be the way i take off. Is my body supposed to be extended? How can i keep my self from leaning to the side of the seat in the air?