My name is xTw1zz (EUW) and i am currently silver 5. I have been maining jhin since about he was released and i now have about 400k mastery points on him. I have tried alot of different builds and attempting to create my own ones until i found what i believe is the optimal jhin build.

Pros; 100% critchance in lategame, around 800 ad with full build and elixir of wrath
Cons; Very lategame reliant, if not used to the champion can enemy win lane easy

With this build you want to try and poke your enemy out of their lane allowing you to farm freely. Try to use your 4th aa on enemy adc only. Always try to get first level 2 unless you have to give your jungler a leash, always try to do this as you will get a huge advantage with your root.

First level 2, Level 6, level 8.

If you want a champion that works well with Jhin you should try to get a support that plays alot around cc and stuns, primarily to insta cc with Jhin's W and forexample Leona's E.
The supports i would reccoment with jhin is; Leona, Bard, Morgana, Thresh, Karma and Janna.