Birdcage!

And I've put together the design for the birdcage now. It is paper and will wrap around in a box twice, around the acetate used for glazing- this will utilise the strength of the acetate and usefully will also divide the van into the luggage part and guard's compartment- I might also make a proper card division allowing me to include a bit of detail.

I've included the key for the layers to make it a bit easier to see what's what.