[he taps his pen against his notebook - though on closer inspection, there's no writing lines and it's covered with sketches so maybe it's more apropos to call it his sketchbook instead - before putting said pen down with a sigh]

You know there is such a thing as 'over-achieving', right? [that said, he (finally!) gives her a wry smile as he takes the little bag of cookies] Not necessarily a bad thing, but what were you going to do if there was fewer people here than you had expected?