https://www.youtube.com/watch?v=ALeoHAldK2g
^ this map you don't feel confident in the technique, just practice ctap without rocketjumping, try hitting easy vertical & horizontal heights consistently (620u)
https://gamebanana.com/maps/186274
^ this to test your abilities to hit maximum/hard ctap height (691/685u)
https://www.youtube.com/watch?v=Fw0QFVzyNhA
^ superior video that should be linked in every ctap thread