You're welcome
My thoughts on how it could be better?
Well, I like that you gave her a tomboyish look to sort of emulate a main protagonist Sora feel,
but the shorts don't really fit Snow whites' personality.
Even though, many of the kingdom hearts characters designs have an adventurous design aspect,
remember that Snow White is a princess.
I like the idea of short clothing on her for battle, but the shorts take away from her appeal.
Maybe, while still keeping the short apparel, you could give her stylized bloomers with
a cut off skirt draped only on one side of her waist while allowing a more plain lace skirt
underneath, slightly covering the top of the bloomers.
The Bandanna is nice but it is a bit plain. Maybe you could work on adding
some more subtle detail to that area.
The poison apple Keyblade is a fantastic idea, though if you could make it seem
a bit more elegant by adding little flourishes here and there, similarly to the oathkeeper keyblade,
then that would look even better.
... This is getting difficult to explain so I will make a picture of what I mean.
This is just an example and is just a rough. It is a little over the top and kind of
shies away from the original concept but this is kind of, what I had in mind as far as changes.
If you were to create it… you would probably have to make her over peach instead due to
way to much detail and certain parts of her needing flowing material XD
Anyway, even if this was somewhat hard to follow, I think all your model really needs
is a nice texture and subtle elegant detail and not a full blown custom model over peach XD
As I said before, best wishes in that contest
( ^ヮ゜)