Only watched the first match:
1) That was a terrible Falco. He didn't even SH his lasers, his attempts to CG were half baked, and his attempts to air dodge your attacks were terriblely timed.
2) Online is generally speaking terrible for showing what you can do.
3) Not enough jab canceling. When you see he's standing out of range, cancel the jab. That happened several times. If the player had been good, you would of been harshly punished. You also only attempted to cancel your jab with a few grabs, which you were too slow with.
4) Speaking of grabs: if it misses, don't try again. You will be punished, you should be retreating.
5) You didn't retreat with your Fairs. You stayed in once place, which works for attacking if you are predicting that your opponent will try to move back a bit instead of spot dodging, but for defending, SH Retreating Fairs are the way to go. You got the SH part down with the Nair and forward Fairs, just start moving backwards with them.
6) Too much rolling, not enough spotdodging, and too much dodging in a row in general. You don't need to spotdodge and roll 4 or 5 times in a row. If you do have to, you have placed yourself in a terrible situation.
7) Shield -> Attack. You did it a few times, but most of the time if you did shield an attack, you didn't capitalize on it. Ike is a punisher.
8) You shouldn't of let the Falco grab the ledge so many times in a row. It was like, 3 ledge grabs in a row. The Fire Falco's you could have edgehogged or Eruption'd. Maybe even Dair'd, but he was fairly close to the stage.
9) QDing for movement was fine, but you charged it too long. You should still be running up the last little bit, to make sure he doesn't intercept it, shield it, and punish you for it.
Ya.......unless there was a big difference in the other videos, a fair bit to work on. You're better then the random noobs online, don't get me wrong. I'm just sololy pointing out the flaws because thats the way I am. ^_^