So next stage is to Sand the walls, I use a fairly fine sand pit type sand which gives an even texture over the whole wall. Paint on carefully PVA glue then sprinkle with nice dry sand. Once this has dried you can fill any gaps. This is a great way to cover the ends of the tabs which can be seen on the front walls.
Next up the roof, a thin strip on card to represent the eaves under the roof, more sand and then tiling. Simply cut the tiles from cereal packet. Do lots at a time you 'll need them. Then run a line of glue along the bottom of the roof. Using the point of a sharp knife pick up and stick the tiles. I try to get them to broadly overlap but don't worry too much, as they represent slates which aren't all exactly the same size. You don't tend to notice them when it is on the table.
Chimnies don't come with the buildings, but a piece of balsa wood cut to shape,grey card and some thin plastic pipe look reasonably effective.
Finally stage some more sand to cover the chimney breast so it matches the walls.
You could of course add lots more detail, some more corner stone along the chimney but I think it depends on the status of the house you are building, again variety is good in my mind.
This is ready for painting now. I plan a range of couloirs and as a couple come as shops I will make the shop fronts look a bit more fancy we'll see what it looks like painted.