There's some clash, imho: the perspective suggests that the train is moving towards us, its 'head' is larger than tail. But the trails indicate that it was moving away from the camera, right? Call me conservative, but I'd like the two to coincide, not work against each other.
Great blur effect! The slow shutter speed appears to have caused an overexposure. A smaller aperture or a neutral density filter could help the exposure. Post processing could improve the exposure as well: darken the image slightly and increase the contrast. 6
i think the colors are a little dull on this, also there is nothing really in focus. The blur on the train is perfect. Maybe if you had taken this up by the tree and had a bit of that in focus that would have been better.