Giant Devouring Worm

This is what I envisioned as the giant worm creature that attacks a party of adventurers in the novel I'm writing. It's the first creature to be encountered in the book. I might eventually post a few parts from the book on DA, but I don't know if I will any time soon.

I didn't draw any references to show just how large the worm is. It's open mouth is giving a rough estimate about 22 feet in diameter.