I also just judged from the first game in the first set. I saw way too many dair -> fmashes. Sure it adds an acceptable amount of percent, but there are so many more things you can convert into so you can deal more damage and have more combos (shine, utilt, another (not a dair) shffl).
There is also a lot of rolls and spotdodges that are unnecessary. If this keeps up your gonna learn the long and hard way by being punished to unbelievable percents and KOs.
Falco dittos come down to who uses the most optimal pressure. This doesn't mean, however, whoever spams the most lasers for the other person to crack (because at higher levels it's easy to get out of it). You want to mix up approaches, add a DD to fake-out your opponent. I saw like zero grabs in that first game, Up throw is, at low percents, good to follow with a soft bair or something. Sometimes, I personally like to downthrow if I feel confident where they will roll to for an easy punish. approaching shl -> shine grab is an amazing approach for constant shielding opponents.