I’m not an expert, but I’ve shot a fair amount of green screen. I’m assuming you know the technical needs of shooting on green. If not there’s a lot of discussion of that you can here on the Cow. Here are some thoughts. 1) Shoot talent full length and with the body orientation you want when placed in the composite. There are a number of ways to monitor your shoot (if you use a video tap on the film cam) so you can see a rough composite in real or near-real time. 2) I’d do the best you can to get the talent up high with respect to the camera. You might be able to exaggerate their position in the composite software. 3)As above, shoot talent full-length and scale them in the composite program. Using green screen out-of-doors will be quite problematic as the sun constantly moves (and there are clouds) causing a varying green on the screen. It would make pulling the key very difficult, perhaps impossible. Hope this helps.
John
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