Yours turned out excellent! The only thing I would point out is that the doors at the end of the gangways only have one window instead out the two at either side.
Nice plan! It's up to you, but if you use peco streamline track you can get a much better "flow" out of the track. Just drag the crosses in the middle of it to get the shape you want! Looks a lot more realistic and less "trainsetty".
Yeah it's a pity I don't even think it had a name, but it was beside the shunting puzzle layout. Mostly English locos but 112 was going back and forth as well.
Station lights would look great! Markings like the yellow line will make it look much better, and maybe you could include a canopy or something? Layout's looking great though!