The first thing that jumps out at me in this shot is the focus and clarity. Excelent job with that. I like the angle and framing/cropping as well. I like the seperation of the dark tracks and the light sky. great perspective as well. good shot. good luck in the challenge.
This is an excellent shot one of my favorites. One thing I would do after the challenge is clone out those telephone wires in PS. Then it would look like the traintracks to nowhere. Good job.
Like the way you got down low to take this shot. You've got some nice balance between the darks and the whites, and the way the rails just seem to lead way off to the distance does a really nice job.