Why in the HELL would people put the caption "rate my art, please! kthanks!" if they didn't want people to comment.
And then, when people do comment and give their honest to god opinion and tell them the things they need to improve upon, they clam up and get defensive with dumbass excuses like "well its my style. yadayadayada..." or "well i am gonna draw for a game company and can draw watever I want..." Bitch you CANNOT draw whatever you want. The game designer TELLS you what to draw and you DRAW IT! And guess what? If you don't draw it to their liking, guess what they're gonna do? They will have no problem throwing that shit in the trashcan and telling you that you can either get out or worse case scenario, he'll just fire your ass right then.
And then, they have the audacity to block the person that gave them the honest critique in the first place? DAFUQ IS THIS? It may have been harsh as hell, but these people online don't know you, and they're not going to sugarcoat it for you to make your ass feel better.
If you didn't want them to "rate your art" you should've said something. And the comment "don't rate this unless you have something nice to say" is utter bullshit. It is bullshit; your argument is invalid.