The subject must not wear any of the blue or green screen color, be it his clothes or make-up. If he does, those areas will be replaced with the background image and will be marred with holes in the frame unless you are aiming for “bullet hole” effects.
As a general rule, matte will only be good as the camera used to shoot the foreground subject. The foreground video must have a high resolution and a low noise level. Green screen wizard software will do this easily for you.
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