Routines like these used in driving can be summarised in three steps :
Set-up (secure; seat; see)
Start (neutral; clutch; key)
Move (prepare; observe; move)
Hazard (mirrors; signal; manoeuvre)
Stop (mirrors; signal; manoeuvre)
Secure (handbrake; neutral; cancel)
Confirm the car has done what you intended by using 3 senses : Sight, Sound, Sensation.
Some handy sayings are based on three words, which can be easy to remember.