Something about the angle of the pic really adds a feeling of height to this picture. I almost feel like I want to step back from the edge just looking at it! Very nicely done!! Keep it up!!
The best thing about this photograph is the unique perspective. It's an extremely original, if not suicidal, idea. Perhaps it's not possible with the angle you've chosen, but a tripod with a longer exposure would have created a very interesting effect as well.