Sorry for my EnglishI'm sorry for my English, I am Brazilian and I use the Google translator, I hope you can understand
IntroductionTry to use against pantheon of champions that are attack damage and melee, and he very strong in these cases
Early Gametake the minions a bit advanced, using his first ability to disrupt the enemy in the farm, and ask your Jungler a gank soon home to force the enemy to give recall or even kill him, and so you will dominate the lane, if not esquessa ask one of us picks Jungler that can gank at lv 2.
Mid Game, Late game and Team Figthsyou are an assassin champion then you have to go look at champions with greater damage and try to strip them of the place or kill them, do it after you activate your items and go kill the rest
Final CommentsI did it here so to sum things up, what was missing you will learn over time and with practice you learn, and again I apologize for my English