Your main tactic is to break enemy buildings while your opponents are distracted (engaged in a fight, staying on a different line, attacking your structures and etc.). Prioritize pushing more often than participating in team fights.
Be sure to take the IRONWOOD TREANT aspect. It is your main potential in destroying enemy buildings.
Always look carefully at the mini-map. If it seems to you that there is no one on the mini-map and the enemies are coming to attack you, they are.
Pay a lot of attention to the macro game. Watch your opponents' movements and remember that you have to be where they don't expect you to be.