you present yourself as if you were posting a nooby stiff replay, which this certainly isn't.
Judging by this alone, you're already quite good.
A few pointers, though:
- grabbing without doing more substantial damage isn't ideal. It's not a flaw, but I still think a replay with a split and a decap done by grabbing isn't as good as a similar one with the same dismemberments without grabbing. Grabbing is very fine for (skillful) smashing and shatterhits (boomhits).
- Self dismemberment doesn't look good in most cases. You had a good pose there, dismembering your wrist didn't improve it.
- If you want an idea to improve this particular replay, there isn't really much (that I haven't said yet that is), but if you really want to try, aiming the kick between the pecs instead of the head could produce a nice shatterhit of both arms and maybe even the head.