wow... it looks really good m8, maybe you should improve a bit some trasitions at some point but nothing really serious, and try to make those decaps without just leaving the message to the public, this last one could help you if you're gonna keep trying more and more different stuff. for example, if you're gonna make a decap scene from a 1v1 fight, you shouldn't make it that fast like this one. Excepting obviously, the simple look of the pjs, that aren't really needed if you're practicing, and you could improve it later.
i'm not an artist aswell, but wanted to give you some tips.
All i can say about the animation itself is... it's awesome, i liked it a lot.
10/10 but as i said, you should keep improving your skills.
Ty for show your art with the community ^^