I think the main issues here are flatness, high saturation, and antialiasing issues. In some areas, you do antialiasing that seems perfect, and I have no problem with (bottom of parrot's upper beak), while you only aa one pixel long in places where you need more. A good rule of thumb is halfway between the colors, halfway down the line it's aaing. Also it messes the look up if you only aa on one side of the line, but I can hopefully attribute that to time constraints.
The issue of flatness arises from the lack of consistent shadows and highlights. You have nce highlights in some pieces and then you don't do anything to show where light wouldn't hit. In other pieces, the opposite is true.
As for the saturation, what's the monitor and app like? Does the program have limitations or the monitor bad settings, or was it just that you couldn't be bothered?