when using caitlyn, you want to be aggressive in your plays, you want to have a good support (soroka) that can keep you going. because your an ADC you dont want to be ahead of your partner, stay further back and take advantage of your piltover. if enemy champs get close to you use your W and E combo, by netting away you can fire your piltover right after to deal some nice damage as your getting away, giving your partner a chance to jump in for the kill.

when farming minions, put your piltover for your advantage for farming those minions and damaging nearby enemy'. make sure to try to use your traps as well; placing your trap in bushes will give you an advantage for getting away without getting caught. Remember you have very limited MP so you don't want to put yourself in the corner.

when playing Caitlyn you have 5 useful skills. your passive headshot gives you a very good advantage for laying down your critical shots. try to farm your minions as much as possible but save your headshot for the enemy. after you land your critical hit try to land a piltover, immediately the enemy will try to run away, but use your net as an advantage and net towards them to land a few more shots and if possible try to finish with your ult. without being to close to their turrent, try to block them off with your trap and farm as much as possible, try to keep the enemy away from your minions by keeping him far back near their turrent. beware by doing so, junglers will try to gank you, try to place wards in the river to keep those nasty ganks from happening.