My overall thoughts mirror pajamaHam's. I liked the idea of it, I think your animation started off with a solid start, with some shakiness coming from the poorly detailed grave. But, it did become mottled rather quickly. I think if this were revisited, some more details were expanded, and with a slower pacing, this would make for a good animation however. I personally enjoy dark or somber animations from time to time, especially for series like Legend of Zelda; where it could fit without feeling too jarring.