Dear Craig
I beg to respectfully differ with the nice comments above. I looked at your image for a bit and finally decided that it just did not work for me. Either the clouds are the photograph (which I am inclined to think) or the train is, but not both. The horizontal and vertical elements also conflict and do not seem pleasing to me nor do I believe that they add to the image.
Folks can differ on this one and the comments of others are thoughful and valid. I just have a different opinion.