There is no issue with the dot (well, you can say the best step 1 should be "E,Q,1,2,3,4,5,6" not "Q,E,1,2,3,4,5,6")
if an enemy is nearly die, just 1,2,3, 1,2,3 it
you should not move nonstop while dps (say: back->4, flank->1, back->6),
because the server lag, sometimes you could miss the damage bonus