I'd have to say practice his Farore's Wind recovery a bit more. In both videos he died because of a Farore's failure, in the second one twice.
When Zelda is below the stage, almost perpendicular to the ledge, if she teleports straight up then she will still end up a few feet away from the ledge. If she teleports diagonally then she'll reappear slightly below the edge. Two ways around this:
- Move Zelda directly underneath the ledge and then teleport straight upwards to grab the edge. This one is very risky and extremely dangerous. If you teleport too high you'd float helplessly back down to the ledge, while a nearby opponent could take advantage of your helplessness. If you teleport too low then you won't grab the edge and you'll fall to your death. Even if you teleport right at the edge, at the spot where you would grab it immediately, a smart opponent could try to quickly edgehog before you could reappear. I would not recommend this method unless you're sure you could grab the edge and that your opponent's nowhere near the edge.
- Move Zelda away from the edge and then teleport diagonally towards the edge. The added horizontal distance away from the edge should make it so it's easier to land the warp. If you still have your second jump then it's even easier to move her to the correct teleportspot. Remember to keep your cool when recovering and to not immediately press up and B. Remember the second jump. I know that must sound incredibly obvious, but just remember it, lol.
If your brother would like some reading material, you could direct to him to
a very indepth guide on Farore's Wind.
Also, it might be also be good if he watches some videos of a pro Zelda. NinjaLink's videos are not only inspiringly epic, but should also have some examples of the second recovery method I listed. I probably didn't explain it very well, hopefully a video should help.
Here are two of my favorite NinjaLink videos: (both chosen for their amazing d-air use lol)
http://www.youtube.com/watch?v=cnFtHNAjwV0
http://www.youtube.com/watch?v=Tg-2JssmAzg