Realized this after not shaving for three weeks in honor of no shave November.

Yeah...
Girls don't usually look that great in beards, anyway, through my experience.
(JK, I know- but the picture is of a girl ;) )

Just keep shaving. You'll grow a fuller, thicker beard eventually. Word.

start simple... pick Sideburns or a Goatee/van dyke; some kind of non-beard facial hair... once that grows in, let the other half go as the 'second shift' catches up use a guarded blade to blend them...

Unless you're a frequent flier...

I don't think that. I usually won't assume what people are based on what they look like.
Then again, here in the us, we have those conservative idiots