Images Rejected Due to Quality Issues – Need Feedback

In most of these images, the texture of the fruit is inconsistent and unrealistic - some of them look plastic. There are drawing errors here: the mint leaf is both in front of and behind the glass, and the puddles of juice look oily and much thicker than real juice.

The mangos look a little too cartoonish compared to your oranges.

Glass of orange juice with oranges isolated on transparent background (your fifth):

You need to check your assets at 100%, and you will see aliasing and compression artefacts. As the assets are PNG files, that cannot create compression artefacts, you had thos in the original files, before the cutout work. 

The cutout work is quite cleanly done, I'm imressed, but still in the top of the glass there some cutout errors. I agree, it's difficult with glass, but still Adobe expects correct cutout work and is very picky on that.

(Compression artefacts and aliasing. You see many more errors; I marked only a few!)