Looking to Improve

Recently, I've been really trying to improve my play. In the past I switched roles quite a bit, and never really gained an identity as a player.

Being only silver and a jungle main, former ADC main, I tend to find myself with a team of top lane carry, mid carry, ad carry, and support carry type comps quite a bit. For that reason, I've been trying to find a jungler that can fill the other needs for the team, yet still be able to carry if the team is unable.

I've been playing a lot of Warwick, hes pretty oppressive in silver early to mid game; however, i feel his late game is just awkward.

https://na.op.gg/summoner/userName=projekton I have like a 52% overall win rate with a 70% win rate as jungle and 67% win rate a mid(secondary), with that I feel like I'm doing well. Though, I feel like there is still massive room for improvement, yet I'm just unsure what needs improvement.

I guess what I'm looking for is some advice, tips, or ideals that you would want in a jungler on your team. At it's core what are the main things you are looking for in a high elo jungler; as that's what I'm aiming to become.

Thanks in advance...