Robert,
Granted, there are many procedures in accomplishing a beautiful deep finish, allow me to share with you, mine. This can be done with modeling supplies you can find at retail chain stores, as well as your local hobby shop {LHS}.
(1) Do any and all cutting, scraping, sanding, etc.
(2) *BARE FINGERS WILL NEVER TOUCH THE CAR BODY AGAIN
wear gloves*
(3) Wash the parts to be painted in mild detergent and dry thoroughly.
(4) Spray primer and color to parts, allow 2 days to dry, under box.
(5) Apply good layer of Testors Gloss Coat, allow 2 days drying under box.
(6) Apply decals, pin-striping, etc, allow 1 day drying under box.
(7) Apply second layer of Gloss Coat, allow 2 days drying under box.
At this point, your car body will look as if the markings are actually PART of the slick finish itself!
(Works exceptionably well with yellow flame over dark blue metal flake color!!) See picture example below after third coat of gloss:
AMT 1971 Chevy Monte Carlo in Bobby Allison livery
click link below
http://gunsagogo.org/allisonfinish.jpg
Experiment, be in a ventilated area, and prepare to be amazed!
Take care,
Frank