Or from the ground up
Ground to flightdeck confirm walkaround check is complete release brakes.
(FC) Brakes released
(G) Commencing push back if relevant confirm the direction the a/c needs to be facing
(FC) Confirm ready (push)
(G) Brakes to park on taxiway and confirm L or R engines to start up (Confirm this if start up on stand at commencement)
(G) Confirm a/c is clear for departure and state which side the 'Headset man' will clear the a/c either capt or F/O side.
Once clear give the thumbs up displaying the locking pin. (Locking pin removal can also be confirmed when a/c is clear to depart.
Capt / FO should indicate with the thumbs up that all is ok. If he wishes headset man to come back should flash landing lights a couple of times.
Headst man shouldthen wait until the a/c passes him under power.