Composition - C&C Request
I would suggest experiment with moving closer and changing angles next time. There are many parts of the rail cars that would make an interesting subject especially with proper light. I always find it rewarding to start with a broader scene and then move closer and closer until, in your example, just one bolt on the rail wheel is in the frame. You would be amazed at what you could eventually get as a keeper. To illustrate, I cropped your image as much as the resolution allowed to something that I would consider stronger composition: in this case it is more about playing with colors and lines while giving just enough details to let the viewers know what it is. The original image looks too much like a regular snapshot; this one is a bit more "artistic" in my view. It is rather subjective though, so take it with a grain of salt. Hope it was helpful anyways...