Tha coat is really cute! Just to warn you, though, last year I got heat sick outside at the picnic and I wasn't wearing a coat, so I'd be careful.
If you want some advice, I'd ditch the maid-like headband and the small parasol, since those add a costumey look. Maybe a simple pearl headband or a bow of some type instead? You are super adorable, though. I love your hair (wig?). *_________*