Scout requires a lot of mental energy and dexterity.
1. Assuming youre right handed (mouse), ensure that you have some sort of bone support, i.e. desk, armrest. Use your mouse for up and down (y axis) and smaller movements. Your small nudges are used to aim for the head of your oppenent, and also minor corrections.
2. All of your major movements will come in a strafing manner using A and D on your keyboard, Left and Right respectively. This is used to wholly acquire your target for quick pop shots and more steady smaller ones. ( ever wonder how that scouter was hitting you so quickly? this takes practice.)
focus on 1 sight picture. once you have seen your target he should either already be in your sights or very close to it. Using Left and Right we can strafe to achieve a better shot. If you are taking fire from that target, use whatever cover is nearby simply by strafing to it in short burst taps. You can assume that if you have ducked in quick enough, your target will be in the same spot allowing you to quickly engage him. Using your flash memory or 1 sight picture and the speed advantage with the scout, you can swiftly engage multiple targets using cover and strafing.
3. Finally, your trigger (mouse 1) finger must be hairpin and light. Use a lighter click with your pointer finger toward the furthermost foward part of mouse button 1. This sounds silly but coupled with your elbow/arm's bone support keeps your shots swift when theyre needed most.
Practice, Practice, Practice. Use your scout's movement bonus to evade and fall back to more benefitial cover, eliminate your opponent and the proceed to clear that danger area using large strafing movements. Use your secondary to clear smaller areas (hallways). Also, dont be afraid to shoot often, you may be surprised to see how many kills are achieved through blind smoke or doors with the scout, I garuntee you wont run dry by rounds end.
Thanks for the great community!