Man, that looks pretty good! Some touching up and resizing could help as others suggested, but I think this proves it can definitely work.
And jarbear, I went back watched that deleted scene a few times and I’m still not really seeing what you mean by rough effects. There isn’t a lot in the background, just a dark wall and a console, but I’m not seeing what makes it look rough. Sorry, it must be going over my head.
Granted, it could be my eyes but it looks like the panels on the sides of the ship (either looking at Rose or Finn) it appears to be digitally inserted but not cleaned up. I will need to relook at them on the bonus disk to make sure it’s not just me on the computer screen. But looking at videos online, the “side background” seems to be lower rez and not polished.