Photograph copyright: DAVID McMAHON
Sometimes a totally unexpected sight can make an arresting image. I shot this in a Montreal Metro walkway, using a little Pentax Optio. It's always tempting to shoot along a floor line because it gives you a sense of perspective, but in this case I shot upwards, using the pattern of the ceiling to accentuate the reflections and also to provide an idea of distance.
The photograph is deliberately asymmetrical, in order to emphasise the unusual quality of the light, as well as the reflection. The lighting and the reflection along the walls draws your line of sight along, and the resultant image looks like some sort of celestial highway.
Never be afraid to experiment while framing or constructing a photograph. Be flexible in your approach. If the first angle doesn't work for you, shoot from a few more - and you'll be amazed at how many possibilities open up, each one more creative than the one before.