
Take a different angle. Request your subject to lie down, be it on grass, on the table, on the ground, (in this case, on the railroad), and you'll be amazed you'll get interesting perspectives. This also makes the subject comfortable, ( I can hear you holler what's comfortable lying down on a railroad?!) believe me it was, at some point. Until two minutes later, the pretty Z. and I were both running away from the appraoching train. I've been using this simple trick, and it works all the time. Above photo is one of the Editor's choices, in
UK's Digital Camera Magazine. 
Lovely model Kharu (a Miss Avon pageant winner), laid down gracefully on this floor. I took this picture during a photoshoot with a friend who happens to be master photographer,
Manny Librodo who I so admire. Manny told Kharu to lie down. *Light bulb flashed in my head*, from then on I tell my subjects to try lying down.

Even more stunning when model Mallory relaxed her back on the floor in this photo.

This tip works as good when photographing, kids or couples. In here, I let Scott and Janet lie down and look what I've got, a relaxed couple in an intimate moment. I get good reactions from wedding clients when they see this picture in print. I added the radial blur during editing to create atmosphere.
Likewise, this tip is also effective the other way around. (Photo of me on my back) Fair enough!