hah dont worry about wiping out. every1 does it.
theres the people that see someone wipe out and make fun of them. but usually those same people suck even worse and won't even try it...
then theres people that see some1 wipe out and give them props for trying and remember when they wiped out on the same jib.
its all about learning and building up. i wipe out on plenty of things, but w/e dont worry about it. i was doing a 5 in the park and my ski popped off and i prolly looked like the biggest fool- but w/e... who gives a fuck i'll never meet those kids that hooted and hollared from the chairs...
jsut keep trying you'l get it