Thanks for the kind replies!!
I did some diorama work for the 3" hasbroline so I've got some experience. I thought I'd try a sideshow diorama since I love those 12" toys of theirs. The only problem is space....
actually I guessed for the most part. If you look at the sidepanels, they are to small. It's mostly made of wood with highgloss paint. I had some lights from a legodisplay and used that for the rear lighting. It makes the sound from the begintune from star wars, alas not the imperial march...
So it isn't a diorama from blueprint just fooling around, trial and error...