Replying to I got 99 problems and throwing a 360 is one...

So Im 15 and this is my first year of park skiing and ive been progressing pretty well i guess I can hit most features in the parks and i can ride anywhere on the mountain. But I cant land a three. I guess the best thing to do is tell you guys the steps im doing and maybe someone can help. First off im trying it on a 15-20 foot kicker that you get plenty of vertical air on but i cant get the full rotation, i get to like a 230 and the i just stop spinning. I wind up and look behind my shoulder when i take off so whats the problem? Is the takeoff to steep? Well anyways let me know what you guys would do and maybe what jump i should try the 360 on instead.