Your mixing frames and glass.
First do all of the frame work, then do the glass. What you are doing is half of the frame and half of the glass at the same time, then dragging the brush over the window. That's a bad idea generally. Do frames first, make sure they stop dripping, then methodically go over the window in overlapping strokes. Twice horizontally over the top of the glass, then in downward strokes cover everything on the glass, then another pass horizontally over the top of the glass, then do the glass again, then rinse top of glass, then going zig zag down the glass. You can do it different ways, and even forgetting about doing the frames, but that's a more advanced technique. The above should be fool proof, if you master that, you can mix different cleaning styles depending on the need on each individual window.
Also, practise on your pole control, what shows from that video is poor pole control, the brush doesn't go exactly where it should be going, in fact it's all over the place, you need to use the pole, if you have got a bendy pole, know exactly how to use the bend in the pole. Precision is paramount.
That's just a real quick observation, its difficult through typing to convey the right technique though, sorry mate.
Here :
http://www.youtube.com/watch?v=dJMdSciKf9M&eurl=http%3A%2F%2Fwww.gardinerpolesystems.co.uk%2Facatalog%2FVideo_Section.html&feature=player_embeddedThat should get you up to speed, you will learn different ways in time, but that's the general idea. It's a good starting point for starting wfp'ers that video from Alex.
Also, keep an eye on the drips from any cross bars. Control the drips, and you will control the clean.