Crouch-peeking adds one more element to this act of angle manipulation, by bringing the player into a crouched-state as they round a corner. This is meant to throw off a defensive player whose crosshair, if they’re experienced, is most likely aimed at head height. To crouch-peek, hold the crouch key as you round a corner, falling into your aim in one motion. In the brief moment that you’re stationary, you should be crouched, scoped-in, and aiming at an angle that you are looking to clear. Chances are the opponent is trying to correct his aim and you’ve got a clear shot!
Aggressive AWPers have to master this quick input of keys: crouch, strafe, scope-in, and fire, without doing any of these commands too quickly or else the recoil is thrown off. The crouch key needs to be pressed exactly as the player rounds the corner, and not before or after.