Shooting a period video of Ulysses S Grant on a wrinkled green screen

This little video we actually shot last summer in CA, it was a kickstarter project that was trying to take a bunch of really detailed maps of the civil war and make a compiled book out of them. The project was successful and you can actually find the book here: http://grant-rising.com/ if maps are your thing. But I just wanted to go over this video and talk about what worked and then what didn't, i.e. finishing the video by adding dust, scratches and film grain and not taking the time to make the green screen wrinkle free as possible.