League of Legends (LoL) Question: improve

- watch replays of high elo draven players and copy everything they do. There are some youtube channels that upload replays of korean challenger players.

- have something that records your match so you can watch it after(for example plays tv). Take note of the biggest mistakes you make. Do you die too much? Low CS? Do you take bad trades too often? And so on. For the next couple of games you should focus on fixing those mistakes

Number 1 way to improve at any champion: Practice, practice, and practice.
Everyone starts off not knowing how to play their champ, and over time you will improve.
I know this sounds harsh, but there is no easy and fast way to quickly become a god at a champion.

I recommend looking at some Draven mains play in order to see what they do differently and to take a look at some of the Draven guides on Mobafire.

I recommend you to watch EU LCS week 1 Fanatik vs Misfits. There were some good Draven plays, and try to juggle 3 axes during fights.