Quality Issues

The white background between the pizza slices doesn't make sense since it appears to be on a gray pan; however I'm surprised that it wasn't rejected based on similars - there are millions of pizza images in the database already!

The moderator may have also detected some minor cut out errors and haloing, as in this example. 

I've certainly seen worse examples be accepted, but I suspect the stripes on her dress should be more solid in this one. Also, your assets don't have an embedded color profile, which should be sRGB.