Replying to Commitment

I've been skiing park for about a year now, and the only trick I can really do is a front 270 out of some easier rails. I want to learn blind 2's, switchups, and hit some of the harder rails and I think about it at home but when I get to the park it's just not there. I wanna be able to throw crazy stuff like the hood crew but It's just different when I get to the park and there's people throwing 450's off and underflips. Any tips you use to throw down and do bigger tricks?