you have a promising talent
The character animation here is quite good - you did an admirable job showing many of the little movements and gestures that are so hard to animate. It's not the best I've ever seen of course, but it was good - keep having an attentive attitude to the world and I'm sure you'll get better. You skipped showing details like toes, which would've been nice of course, but it does take more time. I really liked how you got a sense of the characters' personalities.
One thing to definitely work on is your animation of nature. It seems like it was a bit of an afterthought here, but I think it would be a good idea next time to pay attention to how the grass REALLY moves in the wind. The here was simply not very good (just having sections of grass statically rock back and forth). The best animated grass I've ever seen in animation (gave me goosebumps) was in the film "The Humpbacked Horse" from 1947 (there's a page for it on wikipedia). Another good example to use for reference would the banner at the forums of the website "goober.nu" (the "Nim's Journey" logo).
That's about it. Good work, overall.