Nice image Steve, I think it's a nice idea, and the composition is great too. The building looks like it's leaning slightly, but I think this is just a normal case of converging verticals, which are easily fixed in Photoshop with the perspective cropping tool. While I'm there, I'd be tempted to try increasing the saturation to bring out the colours in the umbrella? But it's still a nice image, I'm just trying to think of improvements.