My thoughts:
- Some things I liked: you're using sex kick, which is good. Probably his best aerial against a SHL spamming Falco. Also, you're punishing Falco when he doesn't sweetspot the edge with a spinspike.
Some improvements:
- Shield-grab less) any experienced Falco will be too fast to fall for that trick, esp if it's a friend you play with a lot. Don't expect many grabs against a Falco in general, unless he's bad at L-canceling his aerials or he's turtling/shining.
- Punish Falco when you land a grab ) too many forward-grabs, when they should have been up-throws or down-throws. You know about the d-throw>Spin Attack, but don't rely on that combo much. It works half the time against space animals, and is actually useless against floaties. Consider up-throw > d-smash for fast fallers, or d-throw to up-tilt for when they're at moderate damage. For high damage, go for d-throw/u-throw > d-air to finish them off. You can still use a throw > Spin Attack, but make sure to switch it up.
- More projectiles, esp bombs) Link has a fantastic array of projectiles, so use them to control Falco's movement! I probably saw you pull out your boomerang maybe 5 times in the match, and no bombs at all! Who cares if Falco's lasers can block your bombs? By the time your bomb's deflected, you'll have stunned the bird with a boomerang, which should lead to some sexy SHFFL'ed attacks from Link.
- Move faster, with more efficiency) Move and attack like you mean it. I got the impression that there were tons of times where you felt you didn't know what to do next. Take control of the match, and do something! Don't let your friend juggle and mindgame you to death. A lot of times you got messed over, cause you weren't moving out of the way. Keep an eye on how your friend moves, find some patterns, and exploit them, whether it's a SHL to grab (you can counter this by baiting him and spot-dodging his grab) or pillar (DI the hell away, and TECH that crap) Move with a purpose, and don't throw out attacks without any meaning behind it.
- STOP WAVEDASHING ) it seriously hurts your game, makes you slower, and makes you waaay too predictable. Use the time that you're wavedashing to SH back and throw a boomerang, or even pull out a bomb.
Link is slow, by his very nature, so you have to take advantage of his aerials and his projectiles. You're not going to beat a Falco through speed, so you have to be more tactical than technical. Keep Falco above you, keep him stunned, and don't give him a chance to set up his game. That's the biggest weakness I saw from your vid. You've got the technical stuff down, but you don't have confidence in your tactics with Link. Start developing that, and you should see your style getting a lot cleaner and faster. Watch some Aniki videos and notice how he dispatches his top-tiers; those definitely help.
Oh yeah, consider hookshotting instead of up-b back to the edge. It gives you a lot more freedom in how you come back; otherwise, most Falcos will jump out and spike you without a moment's thought.