Replying to How to ski pow

So as an east coast rider who has been out west to utah only twice (in 5th grade and last season when they had no snow), I have no idea how to ski in knee deep and steep powder. I am most likely taking a trip to Jackson Hole this season and to be honest, Im pretty intimidated. I know to all you westerners, I sound like a total jerry but I honestly dont know how. I hit some powder last trip but I didnt really know how to ski it properly so I kinda just went backseat and tried to stay in control. Do I have to keep a lot of shin pressure? plz help