This is looking good. I like the scene composition. I like the sunset feeling too, I think the yellow light color suits that feeling very well. The lighting is too monochromatic though. I’d set the lighting setup so the shadows shifts toward blue.
Oh. And that woman with the baby cart attracts the eye like hell. She clearly should not be there. I hope this is a commissioned work about security in train stations.
Attached is an illustrated example of how I would modify the render (modified in Photoshop so the example is rough but this is just to get the idea): The shadows have a tint of blue coming from the sky. And I gamma corrected the render to get details back from the shadowed parts of the scene and otherwise get less harsh contrasts.