I used the provided images and models, but i added my own from the chess lessons early on. I also altered the F22 to include landing gear.
After a lot of tinkering i realized that blender 2.79 has a “shadow catcher” option in the object panel under cycles settings. This saved a bunch of time as i didn’t have to do compositor tomfoolery to mask out the shadows. it essentially did it itself. kinda cool 
