Very hard to pull off. I have one but space in shots are limited to straight on and like 7 feet. Then keying and getting it all to match and having enough space to light screen separate from subjects. And cant put green plants in front to make it look realistic like there would be a few plants on foreground. Can't do low angles due to ceiling. Floor and any shots past the calf are a no go. If I had a green screen room and ceiling and a lot more time it would be so cool to do all sorts of environments. I'd also need images to match all the angles in background perspective wiseGreen screen? You know, George Lucas style.
I can do simpler stuff though on there.
BTW love the Ewok idea. But can't hire kids and don 't know where to hire little people from and that would be a bunch of extras to pay.
I also love that jungle cowgirl scenario.
And more foot struggling..I will try that
BTW these are still great ideas. And I do one day wanna do a jungle or at least a forest background and tribe. I think a crowd funded shoot with a bunch of extras and a real location and crew may be in order when I do this. But it will happen some day