Not too bad at all! I'd work on the timing a little. Strikes would seem harder if they lined up with the BOOM!
Try trimming the clips or messing the the speed function. increasing the speed during the swing and slowing it just at the boom should work.
Also the scrolling water mark at the end was too large to read, try making it smaller text and put it at the bottom.
One last thing, why did you use GG/CC twice? There are plenty of great KOs to choose from.
All in all good effort!