Here's some thigns I noticed:
1) You don't grab nearly enough
2) You don't ALWAYS have to do two Fairs in a shorthop. Obviously it's good for comboing, but if you aren't going to hit them just jump back, waveland, or something. The lag from the Fair is enough for your opponent to get a grab.
3) LOL USmashes are no good.
4) Random Dairs are bad, especially while on the stage. >_>
Also, you should try to end your combos sooner. I know this might sound odd, but the longer you keep your combo going, the higher the odds your opponent will escape. A few times instead of ending with an FSmash and edgeguarding, you UTilted or something and kept comboing. It didn't really hurt you in those matches (Adat got hit by some random FSmashes >.>), but most of the time you really, REALLY want to make sure you kill your opponent before they get to 100%.