Spin Dash/Charge to Homing Attack isn't really a legitimate follow up combo. It's mainly used for luring an opponent into false security after your Spin Dash passes their shield. I wouldn't abuse it as a consistent damage racker. Try throwing in some aerials from out of your Spin Dash. There were numerous opportunities where it could have led into a fair.
Most of the time when you tried to spring gimp, you would have had better options in fair or bair. Spring gimping is best used lower beneath the ledge to throw off recovery efforts.
To much dair on stage without auto canceling it, and that can be a bad habit.
One thing I've learned about Spin Charge: It's not a long-distance closer. If you can, approach on foot. From there you can run into a Spin Dash or a Short Hop ASC. Spin Charge on the ground is more of a quick fix for when you want to lead into a combo at midrange. If you're dealing with long range projectiles, however, you can close in with a Spin Shot if you need to. Shield Dashing works as well.
Too much dair on stage without auto canceling it.
Work on landing your aerials on off stage opponents. There was a missed bair at around 6:56 that probably could have staged spiked your opponent had it connected.
Too much dair on stage without auto canceling it.
Not too bad. It's a basic Sonic save for a few bad habits. You should learn how to more effectively use your aerials, especially out of a Spin Dash/Charge.