Use W AA then quickly R E to cancel the animaton. AA Q AA then E back onto your target.
To surprise kill someone Flash into W AA range then R E Q one after another. AA AA and E to stay on your target.
Chase enemies down with E through minions then E again to your target. Quickly use Q then W AA.
For a bigger trade E onto your target then AA W followed by Q AA. Use your recast of E to leave.
To all in pre-level 6 use E onto your target then AA W instantly. AA Q AA right after, then use your recast of E.
Set up ganks by using E onto your target then instantly W AA. AA Q AA and use E to stay in range to continue to AA.
Your bread and butter animation cancel. AA then instantly W before AAing again.
To poke trade E onto your target then AA Q and E out right after.