Thanks for the comments
Heres some simple instructions on how I made the buildings.
Firstly I cut the foamboard up, cut out the doors and windows and then I add some pieces of plasticard for the patches of exposed brick and the doors.
Next I glue it all together and then cover any of the bad joins with acrylic sealant and use the foamboard offcuts to reinforce the joins on the inside of the building.
Then I add the sills around the windows and doors which are made from cardboard.
Then the wooden shutters are made from balsa wood and I tried to make it look like they are weather beaten.
The iron strips on the door are made from cardboard and I added some rivets made out of green stuff. The roofs are removable but I havent needed that for any of our games.
Then I cover everything (except the shutters) with acrylic sealant and them I use my finger to texture it by dabbing it. I had to repeat the this a few times depending on how bad the joins were
Next I painted them with some cheap poster paints
The church has a removable roof (made from plasticard) and the front comes off as well (you can see the join on the front of the building in the background of the first photo). This was to make it easier to transport and I'm planning to use a roof with a dome to make it look like a mosque. The cross on the front is also attached to roof so it comes with the roof.
The rest was the same as the smaller buildings but it was hard to make the roof fit properly because the building wasnt very square.
Anymore questions let me know
Cheers