Replying to First backflip help.

So I’m at that point in skiing where I want to learn backflips, however I don’t know how to do the first one. I can do them on trampolines and if I tried could probably do them on ground. Now usually people would practice them in powder or airbags but here on east coast USA we have nothing. No powder no water ramps no air bags no nothing other than park jumps. What do I do? Do I just send it or is there something else I can do?