Pretty good...
You did a pretty good job on this piece. I just wish that you would have added some more detail in the neck and body. It looks like you just got sick of drawing it and quickly finished the rest up. It would have also been nice to see a little depth in the picture. He looks a little bit flat and rigid. The detail on the mouth is very well done. You should revisit the piece and add the same detail to the rest of it.
Overall, pretty good.