from what i saw of the epesiode, Lake looagi and the previws of the two last episodes of the season, i think zuko
is going to teach aang?? fire bending. Maybe there will be a fight between azula and and iroh, iroh will die,and zuko will
make his choice in life and help the avatar.

Back in May, I started a fanfic about Season Three, beginning with Aang walking down a street and wondering who would teach him firebending. Zuko was sitting by the road with one of those cymbol-type hats on and said he'd teach him... then Azula showed up and tried to make Aang and them think that Zuko was trying to gain their trust so he could kidnap him or something.
But I lost interest after about half a page. Mainly because I don't know the names of anything (like the cymbol hat thingy).

If it happens (which it probably will, since it seems to fit together so perfectly) then it won't happen the way I imagined it.

Again, Zuko isn't a master. Iroh is. What would be the point if a trainee in Firebending taught the Avatar who really needs to learn Firebending. Iroh is the Dragon of the West who invaded Ba Sing Se.