Major update!
Today I managed to get a lot of work done on the building. I started by carving out the corner stones for the front of the building, using the same technique as the other two walls but making sure that they lined up with the adjacent walls.
After completing this task, I sanded them down, curving the edges and removing the top layer of card from the foam. Taking my glue gun, I glued both sides on, making sure ther blocks where alignred with each other. Then sanded down each side, blending in both side, trying to blend in the join.
Once the sides had been glued on I then cut out a piece of card and started working on the floor. Taking the strips of bolsa wood, I glued them onto the board to act as floor boards. This will probably be the same the next floor. Once it has dried, I am thinking of coffee staining the floor, to darken it.
While this was drying, I sprayed the building with a limestone spray, this has come up a little lighter than I had imagined but a couple of grey washes should do the trick.
Time to let it all dry, I hope you like the progress!