One approach would be to buy commercially made buildings, either ready-made or in kit-form. Some of these are very impressive.
The German company Faller produce a catalogue which is 439 pages long.
However, no matter how incredibly detailed and brilliantly manufactured these be, they still look like toys to me. This seems an irrational criticism to make about a model railway.
But, I still want to pursue the impressionistic route with painted cardboard models similar to these (which I referred to in a previous episode of this blog.)
I'll do some experiments this weekend with paint and brush.
This evening I have been listening to Choral Evensong from Norwich Cathedral on Radio 3 iPlayer.
If you like psalms, try this CD.