[Esperante]

Excellent tutorial. Makes me want to get a better airbrush.

For those of us whoe don't have one, there is a riskier method, but still turns out pretty good most of the time. Score around the edges of the window trim with an exacto knife, as kind of a perimiter the paint cannot excape from once brushed on.

However, the best cheap way to do it is buy a craft pen (usually around $5) and do the trimming.