Number four of the five free sketches -- here we have snapdragoon's awesome zombie dragon character Thanos bursting out of a tar pit. In your ref image I thought I saw something oozing between his jaws, so I went crazy with the idea, haha. Maybe that's how he was so well-preserved? Anyway, Thanos was a super fun character to draw, really cool design!

...Also, I have no idea how to draw tar, oops.