Think a bit of a back flippy motion while doing a 720, to get you started. Then play with it and work on perfecting the axis from there. But what do I know, do what all the trick tips say, jump get corked, make sure to get uncorked then land.
Set less flip and more spin than you'd expect. This is jey to properly cork, if you set to much flip you will do a weird flipped and underotated 7. Good luck! Cobfidence is key, you will stomp it!
I would highly recommend landing it consistently on a tramp before taking it to snow. I said "fuck it" last year and tried a couple off axis rotations without much tramp experience - instant regret. You might get it around but I guarantee it'll be hundred times easier and will look a million times less sketchy if you have the rotation on lock before you try it.