Replying to Love rails, suck at jumps

Ive become pretty comfortable on rails, can do front and back 2's off and switchups. But when it comes to jumps, im not comfortable at all. I can do some grabs but when I get a lot of air, i just feel helpless. And then when I land I just feel this huge shockwave and can hardly ever ride away with afterbang. I can do a very sloppy 3 but only on small jumps. How do people get good at aerials? or more comfortable with them