I am looking for some techniques for covering on an open framework wing. I am proficient with film covering but most planes have been over sheeted foam. The fuselage also has open cutouts on the lite-ply sides. I will be using Ultracote most likely. I would like a color design that passes through open areas so I am concerned.

How wide of a second color can be applied safely minimizing bubbles?
Is there any benefit to putting small pin***** holes in the surface to be covered?
I am using contest grade balsa for the lightweight so would I be a head to just sheet the entire wing?
Is there any advantage to covering the base color with Monokote then trimming with Ultracote for the lower temp?

Any other tips you feel might help would be appreciated.