A thin background building

I've been playing around with ideas for background buildings for use in photos. Over there is my first attempt at making one.

The model is basically a box glued up from scrap pieces of foam board, and then papered with a photo of a section of a high rise apartment. 

I didn't make any attempt to have a proper ground floor, or any variation in the wall pattern as would be appropriate for different levels. I'm assuming that in most photos I'll take with this in the background the bottom floors will be obscured by models in the foreground. 

This building can either stand on the layout behind a model, or be attached to a tripod so it can be placed some distance behind the layout to enhance the illusion of depth.

The tripod mount is made from a piece of metal strapping bent into an L-shape

The metal L is glued and duct taped to an inside wall. 

The box's walls are a bit off square, but after papering, and when positioned for photographing, this isn't noticeable.

This model is more-or-less a test article for these kinds of buildings, and I see several areas for improvement.

The photo used for the wall was sized a little too small, so this model needs to be placed a little further back behind the models than in this test shot. Background buildings close to the models need their features scaled a little smaller than the foreground items, but not as small as in this test building.

The tripod attachment works ok, but it's a little wobbly once on the tripod, and needs to be improved. 

So, promising, but improvements are needed.