hey, so I play against a falco very often so I know the matchup rather well.
First, while the fsmash kill was pretty, you throw out fsmash waaaay too much. Especially when he's on the ledge, the only time you hit with it was when both of you were onstage. If he's on the ledge he'll just drop and then jump to phantasm through you after the fsmash is done.
You didn't get grabbed too much which was good, but the falco player kinda liked to approach a lot more than he should be anyways.
Against falco offstage, make sure to mixup your options! Getting a gimp is a mindgame at best. As such, I dislike jumping off everytime to try to get extra damage, and if you should decide to do that, the best moves are bair and dair instead of fair cuz of the long lasting nature of those moves. I prefer to stay on stage most of the time though. This forces the falco player to have pretty much 3 choices. go above, and get punished from the lag, phantasm through you, and risk getting utilted or go for the ledge. needless to say most will go for the ledge if they get hit with utilt when they try to go through you. at that point, you can rack up a nice bit of damage on them cuz his ledge options are eh. his best option is to phantasm through you, but if you see that coming you can roll back and punish his lag (or just utilt). Most other options can be punished with ftilt,dtilt or grab depending on where you are and what he does.
When you're at kill percents against a falco, shield pretty much everything. You can live to 200%+ that way as long as you can get avoid getting juggled. (I've had a match where I got up to 350% and died off the top to a phantasm). A stock like that can turn a game around.
Finally, that falco player needs to use faaaaar more lasers than he did in the match, it can really make it a pain for ddd. if you do come across someone who does laser alllll the time, if you can get the powershield timing down for lasers, the matchup becomes far easier, but still quite annoying.
hope that helps a little.
Sorry I haven't had any vids to critique at all, I haven't been playing much in tourneys and as of late, I haven't even been playing DDD. This summer I plan on changing that though, and hopefully have some vids up here.