Notbad
A good cartoon look on your art here. I like the overall unique style and the character has a good face. I dont see why you have a 3 rating when this is something very good. I think you could make a full animation out of this but dont hurt the turtle, the green color over the turtle and only the turtle is very unique and makes a statement but you could use more shading if you are keeping this black and white everywhere else. The tree in perticular looks bare but overall I think you have something good here.
THINGS TO IMPROVE ON
just add more shading to the tree and others places and maybe turn this into an animation at some point
~X~