Usually she's a judge at talent shows, so what better way to get a real feeling for what the performers go through. It must be extra tough because she's used to her wings applying force instead of being used purely for balance. (Princess Celestia would never cheat with flapping or magic — she'd probably be more eager to learn the right way.) Regardless of her intent it's very cute and more than a little funny, plus she looks great (sweatdrop and all).
It's also neat that you're using more colors while maintaining that aged picture/print feel.