Ok look what will you do first press your ultimate on the champion then press the w were they are running the press e and q then press w and then blade of the ruined king,basic attack and then r this shall get you 100% a kill

If there health is below 50% (this must done in lvl 3 or 4) press w and e and q then go away when they return press the w and autoattack ignite and flash (if needed)

this way will help you kill the enemy if his health is 100% and yours is 20% or below ok. He is following you press w at a bush then press r at him and w e q r ignite then run

Ok look throw shadow behind there turrent they are safe they thing ok press r then w e q r basicattack and ignite

Gl in zed if need more information my summoner name is swagbatman977