Step 1 - Move the mirror to water source in a garden cart. Note blue air compressor.
Step 2 - Remove the newspaper used as cover
Step 3 - get it wet
Step 4 - more water
Step 5 - use cotton (not polyester) balls to remove stubborn spots
Step 6 - alcohol (has very low surface tension) to dilute in preparation for removing the water
Step 7 - use air pressure to blow off liquids
Step 8 - more air
Step 9 - cotton balls to wipe, one stroke per piece of cotton, never more
Step 10 - continue wiping until all liquids gone