Your Highest Damage is your Q but on ranged champs like teemo try to harass him with E
Remember that your only cc is slow from rylai or frozen mallet so dont go without teammate vs more than 2 champs
your W is your Healing source on early game so try to heal with it on minons a lot
until you make hextech gun dont spam your skills like freak cause u run low on hp quick
Your R is highest source of heal in late game so save it for mvp player in their team or to get massive heal

Like a Pierd EUNE