smccarthy945

I would like to know if anyone can tell me how I can take two photos that were taken with a green screen (one is a picture in a tshirt and one in a suit) and I want to cut the pictures down the middle and have half the picture showing the person in a suit and the other half in a shirt. The problem is the zooms are not exact and when I try to do this, the faces to match exactly. Is there a way to do this and have the software or a plug in match them? Thanks!