Actually this photo is not "poor" at all, the idea of having the tram in colours in front of the B&W background emphasizes it, making a strange and exciting atmosphere for the scene. My only problem is the darkening of the sky part above the buildings. Its not necessary and has a disturbing, unnecessary effect. (at the lower part its OK, it leads the viewer towards the subject) Try to leave the sky, perhaps use only a slight "negative" lens correction effect at the corners. Anyway its fantastic!