If I did, it would have to be something just short and sweet.
I haven't done any fan comics or fanfics for AtLA because I felt like nothing needed to be added to the show.
If anything ever came to mind, I'd make it, but I can't guarantee that'll happen. Sorry. :(
I'm just happy that you know what AtLA is, I love to see other fans who think that the show is complete! If you ever do think of anything i'm sure it will be amazing!
This comic is actually completed. If I ever make another I will post it here as, like, a collection of fan comics.
If you want more content like this, I do have some fanfics on Ao3: https://archiveofourown.org/users/JayLin2314/pseuds/JayLin2314 :)