As it stands, for a "street shot in an airport" it's got a lot going for it. The combination of perceived concentration and distraction by the subject is a wonderful interplay of mindset that everyone can relate to. In many ways the very low-key blue monochrome feeling works, but the two red Coca-cola items add both visual tension and distraction at the same time—more distraction than tension, though. We'd also shave a slice off the left of the frame, to excise that distracting element entering the scene.
Online Technology Editor
This photo gets four stars on the PopPhoto Flash rating system.