for landing switch i just can say, try to ride as much switch as possible. there is no tip if you ask me how you can stomp a 60 ft or at least 30 ft 180 the first time you hit a jump.
just ride switch all the time, try to make carving turns over both shoulders, maybe ride the whole day just switch. at one point youll be so comfortable that you can start with 10 ft 180s, go further on 30 ftrs and if youre at 60 ft youre probably doing bigger ones than a lot of people on your mountain.
rails are a lot about confidence. try to commit and widen your stance, get your body weight down so youre much more stable on the air.