Here is another Paris shot. I'm in the square in front of Notre Dame, which would be to the left of the photo. Paris makes for good night shots, as buildings and streets are well lit, but not lit by neon. But what actually makes this photo work is the woman in the white jacket. The lamp posts in the distance to the left lead the eye up to the nearest lamp post which with is brightest light, is domineering. There we would be stuck and unbalanced, in an uninteresting part of the photo, if it wasn't for that woman's white jacket. The eye is pulled down, and suddenly the viewer notices people in the image, and lamp posts in the distance, which lead the viewer back to the left of the page. This composition forms a continuous triangle. There you go, a quick tutorial in composition.