Help!!!!!!!!!!!!!!1

I think I am at least alright at League, even though I am in bronze (Only been playing for under 2 months). Is their anyway to step my game up and climb to the top? Sometimes I feel like I control games, no one can touch me, and I set up great assists (like CP3 to Griffin from the Clippers), but others seem as if nothing goes right. Oh I play Support. I would like to know how to go from only controlling a small amount to always in control. Any tips?

Let a Diamond in the rough know what he can work on.

My in-game: Paeon