Art: Moonbase in acrylics

I do a considerable amount of art work with the different pupils that I teach and I like to work on something at the same time as they are drawing or whatever (it makes the atmosphere in my classroom much more relaxed). For the last few weeks I have been working on a picture of Moonbase. I like the geometry of Moonbase and the contrasts between light and shade. Initially I started this picture in pastels and chalks, but I decided to go over what I had done in acrylics.
In retrospect I should probably have started again, but I was only ‘playing around’ with the idea. However, after several hours work, and at least a dozen layers of paint I thought it was worth carrying on. It’s not perfect, not by a long way, but I was working in a small space, with cheap brushes and paints and frequent distractions.
Here is the finished result.