Doax, your efforts are mighty. It is true that having pockets of STILL air will improve your R value but the work you are doing is probably not realistic for most homeowners, including having to put them up/take them down each winter.
In my experience (as a home performance consultant) the best bang for people's bucks is to have insulated blinds installed on the inside of their windows. They usually have to be custom made to fit inside the window frames and the very best ones have a track that the blind runs in. The clients I've talked with who have done this have been very happy and have noticed increased comfort.
One caveat: doing this keeps the heat from your room from reaching the glass (which is what you want) BUT because the glass remains colder you increase the chances for condensation to occur on the glass.
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