Here is my progress so far. I am making rought prototypes of every moving part. In the end, it saves time and allows for improvment.

My original idea for the theatre was to use a traditional cast shadow system,but this was impractical as the light source needs to be about two feet away from the screen. Instead, I am using an LED light panel with the figures and background in front of the light source. By a happy accident, this works much better as it is possible to get a feeling of depth using this system.