I've never really liked his head, so the mandibles have been moved just below his head (which should keep him legal, since the weapon is still located where it should be). I've added a tongue since he is a snake, and some armor plating on his head.
The base is built so the Cankerworm is coiled around it. He's not currently attached to it, but when painted and attached he should be camouflaged neatly on the base, with both weapons clearly visible. Now I just need to figure out how to get more than a really great speed bump out of it.