What is a good set up to paint the small parts? The air flow/force from my HVLP finishline4 gun is impressive.

I'm thinking to use double sided foam tape for the vortex generators, expanded metal set on a wooden frame for the other small parts.

Do you prime all sides of the small parts and spray the color on one side, let it dry and then paint the other side or?... Is it best to paint (or prime) the inside of the inspection covers, cable covers etc. or?...

Is it advisable to prime and or paint the inside of the boot cowl?

Thank you from this first time painter,

David