Arrange all the switches in a pleasing and eye-catching manner, and start the engine.
Start at the top overhead panel, go front to back, top to bottom, left to right. Look at every switch or button, determine whether it needs to be on or off. For a JetBanger, you need Batt ON, Gen START, boost pumps ON, fuel valve ON, throttle OFF. Everything else is as desired.
After start, turn on what you need. Test the controls and hydraulics and fail-safe.
Pre-take off VAs are the same for most helos, works for everything from an R22 to an S76, and are borrowed from the venerable Huey:
Hatches
Harness
Heaters
Electrics
Fuel - quantity, pressure, selection
Instruments in limits
Lights out
Audio
Auto (autopilot and/or/auto governors)
Full throttle
Top of green
Blast off.
