Pretty cool.
For a test, that was really good! The only two things I can offer advice on, are the sound effects, which you mentioned and already know about. It needs to feel like there is some force behind the hits, and sound effects are a great way to do that! Also, there were tiny pauses between each action. Cleaning those up would make the fight a lot shorter, but would make it seem more fast paced and believable.
Overall, though, for a first flash, that was a really good job!