IMO , you got THE most important thing right. She looks comfortable , her expression appears genuine. The photo has a 'saucy' feel with all the curves,, again , very nice, but to balance that I think just a little crop which preserves the second strap would give her clothes to go with the hat. The area to the left of her face is really looking rather bright yellow and empty. Depending on what the result looks like doing a little recovery from raw and perhaps adding a little negative clarity , might give the pic a bit more gentle dreamy feel , like ones remembering good times. But I want to emphasize on the charming nature of the photo.