Knowing when to take down waves of creeps with your abilities is also a technique that needs practice. Clearing waves is not hard, but knowing when to clear waves is something that comes with experience. If you want to push forward, clear the wave if you are positive you will not get ganked as a result. If you want to roam, quickly clear the wave and run off immediately. Just be cautious about where you are standing when you clear waves. Using your abilities on the creeps leaves you vulnerable to an all-in when all your spells are down!