Just keep jumping. I felt really uncomfortable in the air at the end of last season (lots of flailing and falling), and now i am super comfy in the air on larger jumps (little to no arm waving). Just concentrate on strait airs for now, until you get those down really well before you start spinning.
Start on small jumps and move up when you feel comfy. I find that actually poping (not ollying) at the lip helped me feel more like i'm not being launched as much for some reason.
Just jump jump and jump some more. It really is something that comes with time, there is no magic recipie to become comfortable in the air.