I can see that this is your very first animation so I am going to be fair, honest but also blunt. I think you need to work on your art style first before getting into animation. If you can't get the art right then your animation will fail. I'm sorry to say it but that's how it is.
Try practicing drawing characters and landscape a bit more. Drawing everyday will improve your art style. Even if you draw stuff just for 5 minutes per day.