I weathered it by dry brushing with light grey, muddy brown and a hint of dark green. Acrylics are great for this. I brought in a large Citadel Drybrush too. I’m pleased that I did, it is excellent for weathering. There’s a nice video describing the technique here.
I have glued four pins to the inside of the model, one at each corner. These will help me attach the building to the platform. I will position the model, mark the location, add a small drop of glue to each pin, then gently push the building into place. The pins will pass through the card platform surface into the balsa wood layer below. I used a similar technique to fit the Bachmann buildings to the polystyrene hills on the layout and it worked well.
I finished making this kit in June and it sat around for three months before I started to paint it. Hey, it’s a hobby – I like to take my time!