On days when I don't have much editing to do I often dip back into some earlier shoots to see what I can create by assembling images.
This is a composite of only three different images using Photoshop layers. The background is actually a single photo of a stormy day in the city with iconic building removed to make it more generic. The model was photographed in the studio against a seamless background and then clipped to superimpose over the background. The clear balls were done using the technique I described in this blog post.