This is why i usually build for gp when i wanna go damage, i start out with a cloth armor and five health pots you can also go for boots and 4 health pots if you feel you can survive the lane without that extra armor at the start of the game. then i go for a wriggles as my first item to build because it gives you a free ward and it gives you sustain in the lane. then i will just go all out damage and if i feel focused i will go for a guardian angel.

i have started playing with my red and quints with pure ad because it gives me an easier time to last hit and it help me in the earliest lvls to harras. You can if you want to go for crit on your quints if you want to rely on random crits in the lane.

i will start maxing Q for last hitting and harras , then i will max my W for lower CD and more health back when i use it and for last i max my E and ulti every time i can.