

Your Q costs you always 60 mana and is always 7 sec CD. If those 3 minions seperate (bcs enemy full pushed them) - use your Q on enemy champion and then try to aa all the 3 minions instantly, so he can't punish you (because you just CCed and poked him with Q)

Get to the bush closer to your base / middle bush on red team and to the middle bush on blue team (the distance is not the same on both sides) and try to use Q to last hit the first 3 minions and hit enemy champion at the same time. Try to reach top lane bushes before your enemy. Here's an example of helping your team mates in countering invade and then still having enough time to get back to your line When the game starts you have got about 110 seconds before minions begin fighting, so you have got enough time to follow your team, help with invade, counter invade or just defending your jungler's camps. Cho's Q is very powerful for invades or counter invades.
