How to pick a different image as your wallpaper:
Navigate through the mods folder to the aircraft you want to change the image for, and rename the image you want to use as your module wallpaper to "base-menu-window" and give the other images some other name.
Ace Combat , Osean Air Defense Force F-5E3 Tiger, Pterolycus Squadron, 6th Fighter Wing, 303rd Tactical Fighter Squadron, Heierlark Air Force Base, North Osea.