Very nice, but one rather large flaw...
Animation was beautiful, but your new tree never had a shadow... I would've given it more than 3/5, but that seemed like kind of a large thing to overlook.
Almost perfect besides that.
i never like these things but it feels dramatic.and thats what you were going for
The message to me said 'If you live your life in someones shadow, you'll never be successful.'
The absence of a shadow on the growing trees was very evident seeing that the shadow seemed to have been an integral part of the story.
It was however rather soothing and it creates a nice platform for deeper comprehension.
Trees! Sun! Seed! Walrus!
It was good, the music fit the tone nicely, and you definatly opened the scene up with the crow nicely. I like it. A lot. I got a little bored with it though, specially through the day and night sequences. I apprecaite that you were trying to keep it as "real" as possible, to get the message across in a stronger way, but what good is a message if your viewer gets bored before the end of the movie eh? xD
But no, seriously it's good, and I'd like to see more from you in the future. Keep up the good work, I would just work on more perspective.