This is a very basic guide but it will help you improve your movement and gunplay.
Guide to Get a Pseudo-Third Person Movement
The bottom two settings are what allows thisYou want both top screen and bottom screen limit set to zero.
And once ingame you must hit Caps Lock to activate.
The results of this are a less cramped control scheme essentially removing the need to hit Q & E constantly to turn your camera to a better perspective, example below.