First off the one thing you want to keep in mind is each gun has its own unique spray pattern so as a result each gun will need to be controlled differently.

To spray for beginners the only thing you need to do is start by aiming at the head then slowly drag your mouth/analog stick down the enemy player.

For advanced spraying its kind of the same but also not, for example shoot at a blank wall and observe the pattern once you have studied where the bullets land from each shot the only thing you have to now do is mirror this pattern while aiming at the opponent.


The AK for an example goes straght up then hits around the top with the shots hitting close together. So what you want to do is start at the head drag down to the players chest for the first 5-10shots if you missed and are still shooting continue to move down while looking left and right (slowly) this will cause the bullets to land in the centre just above your crosshair.



for a video tut this guy explains it very well