Larry - I thought Quanta had pretty detailed instructions on where the chassis markings were -- steering box, tie rod ends, driveshaft, frame stencil etc and what color went where. A duab of paint is in my words defined as follows -- if you were to take a 1" round paintbrush like the one you use for parts washing -- dip it in paint lightly -- and then put a dab of paint straight on the spot. I thought Quanta supplies all that in theri kit.
Regarding the frame stencil I would suggest you cut it somewhat so that it fits on your frame rail and you can tape it. MAKE SURE YOU TAPE IT SECURE AND FLAT. Then hit it a couple times with the can of spray paint that came with the kit. They suggest doing it another way however I did not have any luck with their method. I woud suggest you try first on some samples.
good luck