Just re-read the original post, and saw this is your own sculpt. If it were mine, it would have come out more like Gumby.
Face looks really good, though I'd try to narrow the eyes just a bit.
Love the pose on the log crossing the stream. Very nice groundwork.
The colors could use a bit more blending, I think. Not sure about the highlights and shadows. Strange as it may seem,. try adding red to your base green for shadows and add yellow to the base for the highlights.
You might want to revisit the flash suppressor, It looks over sized in a couple pictures.