going from 180 to 360 was one of the hardest things about skiing for me but after you can 360 all the other spins are just about throwing harder
pretty much just do it on a jump your only gonna get like 2 feet of air off of. dont think about the consequences, just ride up, prewind your arms like crazy and throw it. and by the way remember to pop- thats the thing i kept forgetting to do when i was learning