Like others mentioned, your version 2.0 is greatly improved over the initial model. I also agree with others that the blank wall with a minuscule looking door (next to adjacent walls with very large windows) just looks out of place. Anything placed in that blank area will help. Maybe even a larger (and taller) door. And to me it still looks more like a freight station (or even a non-railroad building) than a passenger stations, but it is your model, so whatever works for you.
Hey, for your first attempt at scratchbuilding, this is pretty darn good. And you are learning a lot in the process. I have seen initial scratchbuilding attempts ending up in a trash bin, so you are doing much better than many others. Hey, even if at some point (now or years later) you decide that the building is not worth savings, you still gained lots of experience making it. And now you also are aware of the fact that you can get best (or most realistic) results when you look at the world around you for architectural clues, and incorporate them into your models.
I also like to mention again that you are pretty good at weathering. Have you dabbled in other types of modeling (like figures or military?), or is this your first attempt at weathering too?