Vayne-When your lvl 1 you should get 3 hits on your target and when you do that should give you at least 20 hp from the life steal so you can stay in lane longer and get kills easier.At level 6 you should be able to run or roll behind a character and shoot them back into your lane partner and kill them eazy.. when lvl 18 you should gank a single person and take them out quickly melt them with madreds and frozen malet. this is all with vayne. If the team you are playing is an Attack Damage team always buy a thornmail and try to get the third hits on them. Give up your phantom dancer for the thornmail.

nocturne you should be able to get first blood and when you have your berserkers you should gank reguarlly with your ult and get fed so late game you melt them with madreds and frozen malet.

Garen is a easy character you should tank in all team battle. early game you should stay in lane long to get high lvl and get a ton of money and be able late game to take baron dragon and any dps or ap char. your atmas should make you a good hit on squishys so go in silence then spin and then if you have to ult for a easy kill then regen your hp easy.

malphite- a tank with a good dammage out put he should harass the characters with his rock throw then ult for a assist or kill late game you should tank and save people because you can get out of most things and be able to kill baron and dragon easilly with your team.

cho'gath- harrass characters with rupture and become huge with your ult and be able to take damage and give out a ton of magic damage and be able to take baron and dragon easily with team and be able to tank towers and save people.

Karthus- destroy people with your dots and and allways put wall of pain to reduce magic resistance and when you have your ult look always at other lanes and ult to help and kill your mejias should stak up and you should destroy in 1v1s and win early game because the would melt you late game and when you die all slow them dots all over the place try to kill them in the life after death thing.Sell the boots and keep the lich Bane.

Ezreal- ALWAYS LAND YOUR SKILL SHOTS, your skill shots are so important and when you get the chance you can melt almost everyone. this is a strict carry build so if your not good you have to be good. ult to kill never ult with this build to help someone because then you will do 2 much damage and kill them. always stak up your staks on the sword and mejais.