Not too shabby. And yet...
The art and animation was all great. The writing was fitting, although I think I caught at least one time where a rhyme was reused, which is probably fine with most people, but I think originality is always better. That being said, coming up with rhymes that always fit what you want to say is really difficult, and I think overall the poem was smashing. I can see a lot of work went into it.
And then the audio was my biggest issue. The narrator has a good voice for it, is obviously a good voice actor, but the sound quality could use some improvement. The recording was a little rough, and maybe it would've been good to bring out the lower tones in his voice to add to the atmosphere. And of course, bring up the music a LOT. I could barely hear it, and music is an incredibly important storytelling tool, in any situation.
I applaud your effort, keep it up.