Replying to First backflip attempt this week, need advice.

So the air bag is going up this week at my local mountain and I'm pretty comfortable flipping a backflip on the trampoline and I can do them into the pool and get all the way around, but I'm never done one on flat. I can do 3s pretty good and just got 5s and I've tried some front flips with a sloppy land (this is my first year skiing) so I'm not that great yet. Anyways, I want to try a backflip into the airbag while I get the chance. I feel I can do it easily mentally but I'm still a little nervous for some reason even though it's into the bag so does anyone have any tips for doing it into the bag and then taking it to snow?