First of, find/get some friends that do free ski (preferably better than you). Skiing park alone sucks, and they can give you real life tips on the spot. Try by getting confident with the basics: skiing switch and be able to carve switch, getting very comfortable with any type of jump just by straight airing it, 50-50 some straight boxes etc... Like someone said, get comfortable with the basics. If you don't have those, you won't progress. For example, when I started, I used to grind rails only right side because it was natural. Result? I tried to progress and I still didn't teach myself to grind left side too, and that didn't bring me anywhere. Also, don't think about crashing on a 180 or 360, it seriously isn't that bad, don't think of the consequences. Not a helpful advice, but I bring a flask of vodka with me, take a shot once in a while to get the fear out. But again, that works for me so I don't recommend it at first haha. Just don't it. Can't think of much else now, hope it helps