Photoshop Elements :: Making A Glass Window?

I'm working on a short film for a friend. In the clips they have a man on a train by the window. As the train itself was stationary, they put a greenscreen by the window. I've added every effect to make it look like there is an outside and its speeding by, but it looks like there's nothing inbetween the man and the outside.
 
The outside is actual filmed B-roll of trees going by and is not a keyframed picture zooming by.
 
How do i make a "glass window" in adobie Elements... something I can bring into my project and but inbetween the man and the outside.
 
I do not have adobie After Effects. The only adobie Program i have is Elements 11.
 
I've looked online and can't find any pictures that work, and any search comes up with making a glass ball that magnifies the images inside of it.