In short
Good crosshair placement means keeping your crosshair at head height and on the edge where an enemy will appear, clearing one angle at a time, so you need little or no flick to hit.
The three rules
- Head height. Keep the crosshair at the height of a standing enemy's head, adjusting for stairs and ramps.
- Pre-aim angles. As you approach a corner, place the crosshair on the edge where an enemy would appear, not on the wall in front of you.
- Clear one angle at a time. Slice corners gradually so only one position can see you at once.
Practice
Walk a map offline and check your crosshair at every corner. Then play our aim challenge to warm up your flicks.