Okay, while making the horns, I still had to keep readjusting, as I realized they were a bit too long out to the sides. Finally got the bodywork on it sorted, and painted. I deliberately used brush painting for the central mount, as from the photos it appears to have that "wrapped" look.
Had a license plate made by a decal company that does custom work. Turns out they were not waterslide decals, but photo decals in which you use the paper backing. So, I used bare metal foil for the reverse side of the plate, in case anyone was able to glance behind it from one of the corners.