Here are some of my replays, hope you like it!

Blood,Sweat, & Tears.rpl
Hand grab.rpl
Spar with Deuteria.rpl
Panda Style.rpl
My decap 1.rpl

Your Hand Grab replay could have easily been made into a decap-kick by bringing your leg forward a bit sooner.
I've edited it just as an example.
Also, your "My Decap" replay, that's not a decap. That's a DM (dismemberment)
A decap is when you behead Uke.

Thanks, I learned from the edit of yours, but what's the difference of decap and a dismemberment?

Decap is short for decapitation, which is the separation of the head from the body. A dismemberment is the separation of any body part from the body. A decap is a form of dismemberment.

As Lucid said, you could've gotten a decap there.

Oh I see, Thx.

They are actually pretty bland. I think your just going with the first thing you see. You just need to work on about everything. Fluidity, style, balance, and realism. I'm not trying to be a dick, but take time with your replays.