To improve your aim turn down sensitivity. Its easier to aim more accurately with a lower sensitivity.
I have an excursive that will greatly increase your accuracy.
Go in a private match, set up several bots on recruit, set the time and score to unlimited, turn health to double
Why double health? This forces you to hit more shots, therefore forcing you to be more accurate. When you go into the private set your main goal to hit very single shot. Once you get the hang out that, begin practicing jump shots and drop shots.
