Keep trying, almost there!
I felt like this could've been really nice. It has an interesting style, and I feel like a neat story could've been told, but ultimately a whole lot of nothing happens. I'm not hating on you, and I applaud you for trying. I actually thought the animation was nice, though, a bit slow at times. You've got something that a lot of pro animators and artists don't have -- charm. Definitely lots of heart put into it. Don't let haters bring you down. Keep on trying. Personally, I would work on adding sound and custom music, and maybe voice work. If you ever need music, you're free to use anything of mine.
PS Mischief Makers movie please! I'd love to see what you do with that. Shake shake!