Good find. One of the better entries. Looks like you were at your zoom limit and oversharpened to compensate- there is some pixelization aroud the cranes.
You really could have boosted the contrast, and perhaps brightened the sky. this IS an advanced editng challenge, but even if you just used basic editing you could make this absolutely pop. great idea, needed more sizzle.
Cool composition. The contrast is a little harsh for the amount of detail that we need to see. I think lightening the sky would have helped make the cranes stand out a little better. I might have straightened the horzion (water line) a bit more. When ever there is water on the horizon the slightest be of tilt will make your picture feel like things are sliding off to one side.