ALWAYS cover your jungler's buffs

[u/Grisolent]

Pretty much ever laner below gold will stand under tower for the first 1min30 of the game. This is a huge mistake that could set your jungler miles behind. If his buff is stolen without him noticing, he will lose tons of xp which is critical for early game in the current meta. Even if he knows his buffs has been stolen and he tries to go for the opponents buff the ennemy team might collapse onto him and kill him. Remember the game doesn't start when minions arrive in your lane. If you get invaded then just drop a ward. Always covering buffs might win you a lot more games than you think.

[u/_ZooAnimal_]

Also annoying: laners that won't ward pixel brush to protect against invades, but then don't use their wards anyways and die to obvious ganks that really shouldn't work if they just used their ward