While the lighting and sound on this video were very well-done, there were two basic flaws within its conceptualization that resulted in the video not being as sexy as it should have been.
First of all, with the possible exception of "flashers," almost NO ONE masturbates while standing up, especially women. Masturbation is simply not done that way. For the optimal masturbatory experience, you assemble the equipment and supplies you want to use, pour yourself a glass of wine (or roll yourself a joint or whatever), make yourself comfortable, relax, and GET YOUR ROCKS OFF, DAMMIT!!!
My second point is that cutting off the faces of people in videos is TOTALLY un-sexy. If you can't see the facial expressions the cast members made during sexual arousal and release, you have lost a significant portion of the emotional content that helps make sex "sexy," leaving us with something more like a mundane household chore than an enjoyable sexual experience.