You're getting better.
I just watched some of your older sprite movies and i can see you've really improved, but i think you can do better.
You should try to make the animation more fluid, maybe it's better to try a higher framerate.
And it's pretty cool that you drew the effects yourself, only problem about it is that it doesn't look so well, i think you should have used sprites for the effects. You should look for the effects from Sonic Battle, those are pretty good.