Why has this been rejected please

Hello, I am new at Graphicriver. Can you please help me understand why this has been rejected with explanation “it isn’t at the quality standard required”? I
Thanks in advance
Link to see the image (originally vector):

hi this is cute but there are execution issues. Some lines do dot look executed well enough and there is a lot of things to improve as regard to shadowing.U have only in one area or something , which makes the shadowing far from credible and the illustration far “from realistic enough” if u ask me. I am also wandering if a single illustration like this can be accepted as this is probably commercially less interesting that having the same character in several posture , at least , I guess so … otherwise , I rather like what u have , this is cute

Thank you, this is very helpful!