ering on a Snowboard?

Here's the deal, I can do like nose press 180 nose presses, manny to mannys, tail stall nose grabs, all that stuff switch too, but thats on a piece of cardboard in my basement. I've only been boarding twice in my life but i skate too. What im asking is, how hard is it going to be to do that stuff moving on snow, or transitioning to rails?