My friends and I feel like making our own homemade MST3K projects. What we want to do is make three people sit in front of a greenscreen and properly video edit it so by the time it's all done it'll look like siloutettes in the shapes of people watching a movie in a big theaters. Like this

http://www.mst3k.org/images/303/itstinks1.jpg

Exactly how do we go about doing this and is it cost effective?