Some tips for a jungler?

hey, i'm stuck in silver wondering how to climb as a jungler - i usually pop off but at least one lane feeds
i think it must be me not paying attention to those lanes as much - wondering how i can tell which lanes need the most attention
is it just matchups etc? thanks

playing with rammus and warwick

Check out the current metas in league, its really important. Don't forget that your enemy jungler has the same intention as you, so you've to think one step further, otherwise he will do it. Check out the matchups at the beginning of the game, which can help you to plan your routes in the game. Jungle is an important role.

Playing with warwick! <3 thats good!

I would definitely stay meta. The jungles change a lot. Since they recently changed the new items I feel that league moves quicker and that the jungler is forced to gank more often.