For those of you that are not familiar with polishing, this is the same principle as polishing the paint job on a car.
Step 1, take a wet rag and clean the windows
Step 2, do only one side of the window at a time, heat is the enemy here, you will feel the warmth on the window when you start polishing.to much heat will cause distortion. do all of the iside , the move back to the outside of the first door.
Step 3, take it easy until most of the grime is off, low speed and low pressure until you see a shine on the plastic
Step 4, buy the second or third pass, you can speed it up for the final shine
Use a polishing foam, different companies have different colors, use a soft foam ,nothing abrasive, don't use a wool pad
Also keep a wet rag to remove the splatter on the doors, compound has a way of leaving mark if you leave it until it dries