And here is the final image.
So thats it for the How To. This is pretty much the way I do all my diorama photos these days. It's relatively fast to delete out the white walls once I got the process down. It looks so much better with a real sky pasted in. I've tried using blue background paper but it ends up looking like blue background paper instead of a sky. If I had really bright even lighting I might be able to do it, but with the variable lighting I have in the room it's a better result to use the method I've shown.
Thanks for reading the story and the How To. I hope you find it interesting and useful.