good job so far
I liked the concept, however there were a few things that made the animation really hard to enjoy.
The crow sound effect in the beginning was too repetitive and after a long while became annoying.
Some of the shots are too similar (the bird flying away shot with the brown in the back ground.) if you wanted to keep this in i would fade in quicker to get the next scene. the shots seem stretched out, remember people see all the good things within the first 1 to 3 seconds. if you force the view to stare at it any longer they start to see all the problems.
Other than those things i think you are off to a really good start. I hope to see the finished product soon. Hope my review was helpful to you. :P