Nipples look off to me, more like just pasted there, maybe also a bit to high. It feels like they shouldn´t be there. Her eyes are kinda large, maybe too large. A minor flaw is her navel which is higher as it should be I guess. Another minor thing is her thumb, but yeah.. not something big of a problem here.
I guess the combination of those flaws is the reason why approvers didn´t want to approve it, or because this isn´t not the style they would approve, as the image is 6 years old already. For this image I would recommend to appeal it in the thread of with the appeal function, maybe someone will like it, even with those flaws.
