Very well done. Nice concept for Santa's origin and very touching too. The most powerful part was when the shadows are moving to Jesus which, in my own interpretation, represents people's sins, and thus cleansing us from our sins so he died on the cross for our salvation. The background score of that part was very powerful too which could move anyone who'll be watching this. So I say perfect choice of music.
PS: Thank you so much for submitting this. This is honestly my niece's (my brother's daughter) favorite flash here on Newgrounds. She's still a baby and she behaves quite well when I play this flash for her. This is one of my favorites too.
Hope to see more videos from you