All I can say is, don't be afraid to spray sometimes, I know it might be counter productive, but it really helps. Sometimes it's easier to do that if you don't have steady aim Not the perk steady aim, just good aiming in general. Another thing, know when to use your knife, I have the problem that instead of knifing, I just spray thinking I can kill them and then they knife me. Also, practice drop shot, it really helps with the spraying