Replying to I dont spot my switch landings?

hey i was wondering about switch landings... i can spin 1s, 3s, 5s, 7s and switch 1s and 3,s but on my switch landings i kinda just let it come to me i dont spot the landing at all. So once i get the rotation around i just wait till i hit the ground. I was wondering if theres any way that is easy to spot switch landings or if it doesnt matter. because i wanna do 9s and switch 7s but will not spotting my landings mess me up on bigger spins?