What most naturally follows?

How to clean a crystal chandelier
Turn the light off and let the bulbs cool.
Switch off the light switch that controls the power for your chandelier. Wait until the light bulbs on your fixture feel cool to the touch.
You can disconnect the electricity as an extra precaution, but only do this if you are confident in operating your home's circuit breaker or have assistance from a knowledgeable electrician. You should not need to adjust any electric wiring in this process.