You have a lot of windows to harass, trade with, and even kill.
During lane phase, you miss a lot of opportunities to pressure Graves – your focus on farm is good, but you have a lot of windows to harass, trade with, and even kill Graves that you fail to recognize and capitalize on. There’s also opportunities to improve your positioning, mechanics, and wave control. It all adds up to a poor laning phase – if you can improve in those areas, this will be an easy lane to win, which will translate into a much more impactful mid and late game.
Your itemization is also a little wonky – try to focus on finishing major items instead of buying components of several. Exceptions can be Vamp Sceptor and sometimes Avarice Blade – other than that, if you buy a BF Sword, finish the IE. If you buy a Recurve Bow, finish the Hurricane.
Late game, a lot of your problems come down to a lack of good vision and not patiently waiting for good teamfights. Don’t chase and fight in the jungle when you could wait 10 seconds and fight under your own turret. If you’re behind, you must make it a priority to establish vision control in your jungles so you can catch enemies out, and avoid getting caught out yourself.
Hideous Z has been playing League since Sona was released in 2010. Playing only casually at first, he began to seriously pursue mastery of the game in 2014, and began coaching in 2015. With over 3,000 hours in the game total, including over 1,500 games on Quinn alone, Hideous Z has put an immense amount of time into studying and playing the game, and has a unique talent for breaking down what he knows into easy-to-understand lessons for his students. He streams Monday-Wednesday, 6:30-10:30 PST. Follow Hideous Z on Twitch at twitch.tv/hideousz and on Twitter at twitter.com/hideous_z.