I'm assuming you want things that are flattering and prefer it when you get compliments so I'm basing my comments on that fact. I think it could be the particular color is not your best, then combined with the horizontal stripes - esp. the horizontal stripes without a break in a spot that defines your waist, sort of keeps it looking blockier than you really are. The neckline is pretty high and rounded, which is fine for many tops but with all the horizontal lines overall there's not much elongation happening. I wonder how this would look if it had a v-neck.
I've been looking for stripes lately that are a bit more varied so that for example there are a few thin stripes, then some fatter stripes especially down towards the torso, which (for me at least) seems to help keep it from making the eye see a wider shape.
The shoes don't help to elevate it, but that's something you could easily change, as well as adding some jewelry. You could add a belt but I realize you were trying to keep it breezy. It might be worth experimenting as a learning tool to see how various changes could make it look.
I have a very hard time with dresses so my comments must be taken in light of the fact that I very rarely wear a dress.