The contrast is the point
Glasses against full glam, a technical job against platinum hair, a dry sense of humour against a pink outfit. The contrast is what makes people revise their first read, and the revision is where the whole thing gets its power.
Warm, not eager
Warmth costs nothing and it's disarming. Eagerness reads as needing approval. The gap between them is mostly pace — see the posture notes.
Let the assumption sit
Correcting someone's first impression immediately hands them the frame. Letting it sit and then being obviously competent is more effective and considerably more fun.
