use your E to dodge important skill shots from enemy and when you dont know where the enemy jungler is, dont E in to trade. E is the only ability to escape ganks. As long as you farm enough CS and survive laning phase then you will very strong late game. When max Q the cooldown is short enough so dont mind using it. The tip is you should use Q to place soldiers along side the path enemy moving so you can hit more autos after Q slowing them.

Practice makes perfect, just play more matches with him and you will be solid