In league sometimes simpler is better
trying to climb as a jungler? Don't play lee sin, elise, etc. Play simple stuff. Think amumu, fiddlesticks, jax, etc. This applies to all roles. Trying to get the lee sin insec play down is going to lose you more games then you will win.

Balance is weakness.
nom all the things
even though the only jungler(s) i think i know how to play is
and
and since kindred are so needlessly over nerfed its not going very well....
, however this setup requires you to have some marks accquired due to a lack of AD.
after
Defensively, I prefer


is more of a laner now.
, I think you should play a champ you like and get good at them so you can carry.