Minor error: Her braid on the left seems to split into two from behind her dress.

Monki said:

Minor error: Her braid on the left seems to split into two from behind her dress.

It seems like the braid was drawn twice, and the artist forgot to delete the first one. (The leftmost braid is also obviously blurrier than the rest of the character.) The background is also obviously just a reused CG, so I wouldn't be surprised if this was reuse of some other art with modifications.