It's been somewhat breezy today, so I cracked on with adding some detail to my Signal Box.  

I wasn't happy with the proportions of the windows, a bit overscale I thought - so I simply added some card bands, top and bottom. I weathered them with a wash of Brown Earth mixed with a smidge of PVA glue, this helped to adhere the paper nicely as it dried.

I also added a station name to the building, and dry brushed some white paint to areas here and there - to simulate minerals leaching and just add some realism.