I've added a little rubble to the base of the building, using a couple of old sprues cut up. The model has then been given a base coat of Terracotta. The paint has had some sand and PVA glue added, as this gives the foam card some texture and helps to cover the masking tape.
Next up its a simple task of drybrushing the entire model with a light cream. This will blend it in nicely with the other models. I may add some static grass arounfd the edges just to finish off.