I don't know much in the way of technical photography terms, but I know what moves me, what touches me, what impresses me. And this does. The coloring of the clouds as an almost-bright background for the somewhat silhouette of the Eiffel Tower gives a beautiful contrast without being completely harsh and stark. I like that we can see the different textures and shapes of the clouds; it gives the impression that they're moving at different speeds. Given this picture, I'm quite curious to see the other ones, the ones that you didn't pick, as I'm fairly confident that they're also worth seeing.