Make sure the car is not in direct sunlight.
Remove any jewelry that could scratch the glass.
Open wiper arms to leave windows clear.
Make sure the windows are washed clean of any dirt. See body.
Have materials on hand:
   Window cleaning solution in spray bottle.
   Paper towels to clean wiper blades.
   1x Microfiber cloth to wipe on cleaning solution.
   1x Microfiber cloth to wipe away watermarks.
Spray some window cleaning fluid on paper towel and clean wiper blade of any dirt.
Spray window cleaning solution on Micro fiber cloth. Not on the glass.
Wipe thoroughly, one window at a time, starting outside before doing the inside.
When doing the side windows, wind down enough to be able to clean the very top. Once done, wind windows up fully again to be able to clean the remainder of the window.
Use the dry Microfiber cloth to wipe away any streaks or water marks.
Be careful when wiping down the glass, that you don't touch the surface with any part of your body, especially the inside of the glass as it will leave smudges on the windows.
Return the wiper arms.