I like it - the train is nice and imposing and you get these little hints of brown coming out of what is mainly a bw picture.
However, this is one of those compositions that leaves me wanting to see more. My eyes keep trying to follow the railtracks down towards the bottom of the picture, but they are cut off. Perhaps you could shoot this in portrait - you would get longer rail lines and still keep the height of the train.
And it looks like your sensor could do with a quick clean
The canon digital slr's have a clean sensor mode in the menu. You need to ensure you have a strong battery and enalbes you to clean it with an air blower. Do not use cmpressed air as it will leave condensation on the sensor. Hope that helps.