Here are some backstage production photos from my Set Design Club. This was for the school play "Grimm's Tales". I collaborated with the Drama teacher and made some initial sketches of what she was looking for in terms of backdrops. Once the sketches were finalized, students projected them onto large, hinged wooden backdrops using an opaque projector. An old-skool projector is ideal as you can really, really enlarge a drawing.
So below you can see students are tracing the initial drawing.
Then they start painting. Here they are painting a large, open book. We used house paints.
Here's the finished 'book' backdrop.
Here's the dark forest scene for the Hansel & Gretel story. It looked much more effective with the lights out and spot-light on it...