Overall very cool, but a few things slightly bother me:
1) Bottom right - there's the green tree trunk, the blue tree trunk and in between there's a bright gray\green\blue\background-colored bush\thing. It looks a bit weird that the bright color returns, it is as if the green tree is very small.
2) There are two main grass clumps, one juts to the left and the other to the right, which seems a bit weird (that look is usually reserved for when the path through the forest is 90 degrees to the image plane so we can see there are two sides to the path), I think it would look better if they both faced left.
3) The previously mentioned flying pixel.
4) I'm not really sure whether I like or dislike the vertical lines.
5) The stance on the guy to the left seems a bit strange, is he facing away from us and holding the rope in his right hand while his left is outstreched and he is leaning backwards?