You are one of the few artists that didn't took the motto "Elephant in the room" figuratively but literally. As far as I see it you delivered a creative flashmovie with your very own style, I especially like the work with the color.
Not only the black/white for death and bright colors for the living, you even had an eye for details (the protagonist is blue, his wife red, so their daughter is - purple!)
Sound fits perfect, thoughtful storyline with a consequent end (you said you had to "cut a lot", but I didn't notice any plotholes or continuity errors) - great work!
Don't be too sad that you didn't reach the next round, there were a lot of good submission in NATA this year, keep it going, you sure got the talent for more success next time :)