Quite enjoyable
I personally loved it. That's the bottom line here, so I'll hop right into individual scores.
Graphics -- They were stunning, especially your backgrounds. The trees with the snow on them and the Northern Lights during the ending credits were quite realistic.
Style -- Sometimes it's good to tell a story with little dialog. This was one of those times. A peaceful tune with a touching story really set a relaxed mood.
Sound -- I did have a little trouble hearing the introduction. I know that it is not such a major factor because I do not understand Sweedish, so maybe that attributed some, but the music was clear and the perfect volume. :)
Violence -- Not much to say here, the snowball fight at the beginning was pretty funny, though.
Humor -- Obviously this piece wasn't meant to be a comedy, but a few parts still brought a smile to my face. The scene when Nim untied the feed rope for the horse and flew up with it was cute.
Overall -- Wonderful movie. I fully enjoyed it, and I feel relaxed after watching it. Thank you for sharing it with us.