Yeah, there are some nifty elements to her design - particularly how her dress has a sort of apron-like look, not unlike that a mechanic would use (just as if the person who made Penny also gave a thought to what kind of outfit to give Penny, or maybe she picked it herself, and likes one that reminded her of a sort of outfit she'd see often?)

You caught Penny's cheery innocence well, with the wide happy eyes, slightly goofy smile and big fluffy curls are part of what make Penny so adorable! Cheers!