at the start of the game until you have your health high enough, do not go full dive engage ever, as a matter of fact after you have finish your ability cycle run away from combat and poke then poke some more. veigs greatest asset is his passive (ie gain ap for assists) that is right i am telling you never take a kill unless you can do it without getting hit. gain your ap by letting your teammates beef up there gold and items, you will get plenty of kills just by accident.
ability cycle (key sequence) e,w,q,r (use r only on a kill shot or to make someone in your face run)
after you hit e remember you are now vulnerable, e cooldown is long.
this is pretty much it, i am not the greatest figuring out counter champs, or writing out a straight forward step by step you must follow word for word guide to win.
if plan a didn't work change to plan b then c ect. :)