Two things helped me a lot.
1. A practice block. I made one out of a solid plastic parking curb but look them up and see if you can figure something similar out. Anyways. I spent a good bit of time popping and ollieing onto it in various board presses, board slides and spinning on it evenly. It will help teach the technics you will use while in motion. Body posture, board feel, popping into various positions and so many other things. Which will give confidence.
2. I made a small summer jib park. With a small ramp and a box jib the first year and a PVC pipe the next year. And I applied those technics I learned on the practice block and put them together with forward motion in a controlled environment. Once I was able to get to the mountains I just had to adapt a little to snow and speed but holy shit it helped.