Your animation is all cool, i love it, but...
There is one thing i don't love on your style: STOP N GO!!!
You seem to have a good understand of what easing is, it's a good thing you know! i apreciate how munch you try to add effect, and how your animations are funny :p
great job! ^^
Nice animations, Nul. You can ease well and have plenty of power in those attack moves.
Like MrZenox pointed out though, your animations are stop and go. Each pose eases to a complete stop, then eases into the next pose to a complete stop. It's great that you can ease really well though, because that's one piece of the puzzle to having fantastic spacing. I recommend looking at Mitch's tutorial and reading chapter 2.3, which talks about flow. I think you'll find it useful.
The most obvious flaw here is the stop and go, which can be a bit tough of a habit to get out of, but still something you should try and get rid of. Try to make your moves flow into one another as much as you can.
The combo looks fairly nice, very stop and go, but I've already talked about that.
The first sword try is flawed, mainly because of that sudden gravitation pull. Also the legs get a bit weird when he stopped in the air, kinda stiffy.
The second one is a nice improvement however, and the trails were a pretty nice touch.
Overall, if you get rid of the stop and go, I can easily see a borderline inter or even an inter in you. Keep practicing.