Pretty sky, but not quite sure how it applies to the theme of this challenge. Also, the building and trees at the bottom of the photo appear to be cropped too high.
I have to admit that I'm at a loss here. I'm unable to find the subject let alone the raltionship to the subject of the challenge. I am sorry... 2 If you read this and would like to send me a message to help me understand, please do.
This shot is somewhat underexposed. Not enough of an interesting skyline to warrant its inclusion into the shot. The sky does look rather varied and interesting, I wish you had increased the levels or curves a bit to bring out the shades of light.
I don't think this fits very well with the challenge theme or if it does, I am not getting it (Too obtuse :)