Try to have always 1 axe before the fight starts, when the fight starts activate the 2nd axe and start farming :).
Combo, e-r-w-q

Pros, Try to improve ur pasive stack´s as much as u can, dont try risky plays if u have more than 150 stacks.
U need 1 kill before the other adc and is gg.
With 2 early items draven is a god. IE and STATIK.

Cons, The range... all draven´s player we know his range is the worse thing he has so try to play def and wait for ganks if u are playin against range champs, ex cait, varus.