Thanks for the positive comments, folks - much appreciated, as always. In answer to some of Paddy's questions, below are some of the things I do to try and make my layouts seem bigger [& especially] deeper. The latter is a real issue in 7mm scale, as there is often very little space outside the tracks, so you have to resort to low relief modelling and painted back scenes to create depth.
First of all, another of my 'Bibles'. John Ahern's book on model railway buildings first came out nearly 70 years ago, but still has enormous value today and should be available second hand. The chapters on low relief and painted backgrounds are invaluable & I have adapted that street scene on pretty much every layout I've built [and am now into double figures]. Check out the photos of both Fintonagh and Arigna & am sure you will be able to spot where I've done this.
The first picture of Fintonagh shows that Forbes Bar is only about 2cm deep. However, along with the store on its right, it is tucked into the corner of the layout, so the viewer can only see it from one direction. Hence the painted houses to the left of the bar can follow a road which also goes left into the back scene & the view is then cut off by the bicycle repair shop opposite Forbes.
The next picture, taken from the other side of the Bicycle Shop shows how that road has gone behind it & we now see the rear of the buildings. These then disappear behind painted and low relief trees, until we meet the next view blocker, which is the Tram Inn. This building is removable, as it hides most of the baseboard joint in the back scene. The church spire covers the rest and a lighting bracket will act as an alignment clip to keep the edges of both boards parallel. In this picture, you can see a pronounced gap, but when both boards are closed up, there will just be a line that will look like one of the angles on the spire.
The other side of the Tram Inn is the Temperance Hotel, just across the road. This road is part of the painted back scene, with a row of shops at the end, supposedly on the same road that branched off at Forbes Bar. As this is a very narrow view [only about 15cm], I have just painted the front of the shops with just a hint of a second side on the chimney stacks. The second face of the Temperance is only about 2cm deep, so I have tried to suggest it is deeper by painting a narrow strip on the back scene. Because the view down the street is so narrow, I can just about get away with this, though I may well disguise it further with a lamppost on the street corner.
Further down the street to the left, we have the other back corner of the baseboards & here is a bit of the John Ahern trickery again. Before then, both the Fintonagh Metalworkers and Coakham's shop are also only a couple of cm deep, so in an effort to give the roofs some depth, part of this aspect is just painted on the back scene. A Mansard roof line helps with the shop & I really like to try and avoid having a gable end just appearing as a 'flat'. However, to make sure viewers will only be able to see this scene from one angle, the large warehouse at the front of the layout hides the hole in the sky, while a large tree will be put to the right of this to ensure the perspective can only be seen from one angle too. In the picture below, the shop roof is just painted on the back scene from a line level with the base of the chimney stack. Mix your paint carefully and the joint is hardly noticeable from a couple of feet away. Note that this aspect still needs a bit of tidying up.
Other pictures below show the same effects on Arigna. Depending on the angle of the camera, they may well look wrong, but from the viewing angle I want you to have of the layout at shows, hopefully, they look ok and add to the depth of the scene - which is where I came in.