Off-centered buttons and Mandarin collars are nice. Not-so-sweet-and-innocent-me likes to appear sweet and innocent, which a Mandarin collar will do. It isn't as innocent as a Peter Pan collar, which can be cute, but I don't want to look like a 9-year-old!
I always make custom covered belts to go with all my dresses, especially ones with waist-line seams. (Which, I haven't designed a dress without a waist-line seam yet, so actually, all of my dresses have belts.) With this dress though, I couldn't make my usual belt with a covered buckle, because I couldn't have a centered buckle with off-centered buttons. And wearing a belt off-centered is pretty lame. So this one just has a button closure that lines up with the buttons. That's a lot better.
And always, the deep side pocket for taking along just the essentials.
And some closer detail.
Of course, some contrasting trim that I am so fond of.