Well, as promised, here is the finished article now I have gotten around to buying some paints.
Complete with dirty 'weathered' walls and a mummified Mother, all it needs now is the hill it sits atop.
As you can see below, the light shines through a bit too much, so I think I'll paint the inside black, but apart from that it's not too bad.(The last photo is a crappy one from my phone, but I changed the light inside to a softer yellow light to make it more natural)
I've seen on Ebay a collection of tiny figures, used for model railways, so I think I'll adapt them for our next project - a diorama of a cursed village, complete with an army of the undead.