cute idea! although i think you should make the eyes more sketchy like the rest of the line work so that its more cohesive. i can see this being a really great kids shirt also.
I think you could try to add more color to give the face a little depth and perhaps change the face to give it more expression. Other wise its a good concept and I like the green.
I really like it, I agree with the comment saying to make the eyeballs more sketchy to fit in with the overall look, and I think I'd also like it with the mouth line curved up so the face looked like it was grinning a little. Very strong though, good work.
Cool... this design is sooooooo cute! I don't think it's neccessary to add in more colors. However, I agree the eyeballs need to be more sketchy... Overall, nice work.
I kinda like the first one more, but I think it's because I don't like any of the default brushes in illustrator. Maybe experiment with custom brushes?
i like it, i'd maybe experiment with some black around the eyeballs since it's the only thing not outlined in black, but if that doesn't add anything then go with this version.