Replying to Switch Tricks

So i'm on my first year of park skiing, I've learn a lot of tricks since the beginning of the year but I want to step it to the next level. I can't do freaking switch tricks (rails and jump), I can 2 and 4 out both ways, switch up, lip on but I can't do a damn switch on -__-. Same thing on jump, I can 1, 3, 5, 7, cork 3 and underflip, but I can't even switch 3 a 15ft jump. My problem is: I spin to the left but I'm more comfortable looking over my right shoulder (I cant on the left). My question is how did you get comfortable looking both ways of your shoullder?