take it one step at a time... dont just bust a 9 if you cant spot and land a good 7.
same with switch. the more you practice the better you get. start with switch ones, then switch 3.s and make sure you can land them and feel very comfortable. same with regular rotations.
just start the day out with like, 180, 180, 180, 180, the do 360, 360, 360, 360 ect untill you feel comfortable to move up the rotation to another degree.