Did you make the music?
I watched it twice to check the credits but didn't see any reference to who made the music. You did everything else so it seems like you must have done the music as well.
If you did, you should include it in the credits because it was really worked very well in the video. If you didn't, you should mentioned that too (because it's a little dishonest not to).
The way the duck appeared at the end threw it off from the serious feel enough, and in a relevant enough way (water theme) to make it a giggle spot, but it didn't seem like that was intended at a joke so I'm not sure which way to go with that.
Was there more to the dream? It seems like this could get a much higher score if it had either more story (dream-like story is still ok, but not totally random) or if it was a bigger punch line at the end so it could be judged on the merrits of being a quick "oh you got me" sort of flick. - good job, I'd like to see a second version.