Replying to Help with jibbing

i need all the help i can get wiht jibbing. i absolutely love it, but im absolutely horrible at it, i just started into freeskiing last year and im looking forward to getting really into it. but i need some tips wiht jibbing. like my mine problem is that whenever i approach a jib i kind of freeze and i don't really kno what to do. could someone explain to me the steps of 90-ing onto a jib? also i need some help with my aerials. i can never land a rotation. ever. i try doing 180's but i just mess up all the time. help?