I am a mastery level 7 teemo main. My username is MrYoon Bear76, and I play in the NA server. I'm not gonna say i'm a god, but i am pretty good at teemo.

When laning with Teemo, you gotta watch out for your poison. Minions will also take poison damage over time, so sometimes it ruins your CS. It can also be very benefitial if you're good at teemo and have lots of practice.

While laning with teemo, you can poke very easily. Just auto attack, blinding dart, then another auto attack to deal half the enemy's health bar. This might seem like an exageration, but nope. Auto attack, blinding dart, autoattack with thunderlord's decree can easily deal half of the enemy's health bar.

Mid game, once you've gotten a few items, you can roam a little after you get your first turrent. Still, try to CS a lot, since you still need CS to get gold and items. Kills won't have enough gold to buy ALL your items, although kills are really great to have and snowball with using mejai's soul stealer.

Late game, you just wreck everyone, no matter if you had done well early game or not. Just stay with your team, since you could easily get killed, being squishy and everything. Just stay with your team, place shrooms in certain locations by roaming a bit, and help in team fights.

The key to playing teemo well is shrooms. While in lane, place shrooms on both sides of your lane. Make sure they are not close enough to the middle so that minions set them off. Placing shrooms at blue or red buffs is also great so that you can know where the enemy jungler is.

Many people use shrooms for farming, but do not use them for farming unless there is a big wave. If you are experienced with teemo, there are ways of using your shrooms against minions, forcing them to set the shroom off and causing the enemy laner to take damage too. Just throw a shroom onto the minions when the enemy laner is coming toward you.The shroom will take some time to detonate, so you have to predict where the enemy laner is going.

Fighting with shrooms. While in battle, just place shrooms wherever, then run through them so that the enmemy has to run through them and take damage too.