I think it was a little bit too short. You should add some details on your drawings. For now, it looks like you take only one layer for the corpse of the creature and another one for the arms and make it rotate.
You shouldn't take Minecraft sound for your animation because unless if you're trying to make a Minecraft parody.
Adding a Play button could be good too.
I'm sure you can do better and I hope to see more of you.