Well it's a pretty basic replay, but that's how we all started.
If you want to learn via decap replays then you must make them perfect. Your opener was nice but a tad random. During the jump, your arms and legs were too stiff.
The decap itself was messy. Practice your aim and hit only with your foot block not the thigh, and go for a clean hit where you get 0 damage because it looks better.