Darth Bizarro said:
This would require some use of After Effects to alter the Death Star so that it will be the same in both the New Hope and Jedi footage and the planet will either need to be corrected so that it won't be red in one shot and green in another.
Yavin's moon is green/blue. the difficult part is to add the red yavin giant to all ROTJ shots.
Im very interested with this project. I hope it will be executed well :)
-Angel