Creepy...
First off, there needs to be some sort of preloader or atleast a play button. At the end it would have been good to have a replay button.
As for the animation itself, It was interesting to say the least and pretty creepy. The music was fitting, and the text interludes (maybe not the right word) sort of made it so you would need to think of a plot that goes around this, like it is part of a larger story.