This is a great video, and I recommend it very often. *However*, my only issue with it is the use of glass cleaner at the beginning. Yes cleaning is very important, but I would not recommend a glass cleaning product such as Windex or similar, very possible for it to leave the glass slick/slippery which can make application difficult. Best to use plain water, or a very very mild soap & water solution, or household rubbing alcohol - I prefer alcohol.
