Character development is key. In good fanfiction, we might see Aang grow in his understanding of Appa's needs and vice versa. Also, an engaging plot that takes them on new adventures, like exploring uncharted regions or facing new enemies, makes for great fanfiction. It should also be true to the original spirit of the characters from the source material.
Sure. One popular aang and appa fanfiction is 'The Adventures of Aang and Appa: Beyond the Nations'. It tells about their journey to unexplored lands. Another one is 'Appa's Secret Bond with Aang' which focuses on their deep emotional connection.
I'm not sure specifically as I haven't read this particular fanfic. It could potentially be about Aang dealing with the loss of Appa in a very emotional way, like burying him, and perhaps exploring themes of grief, friendship, and the bond they had.
Since I'm not entirely sure about this specific fanfic, but generally in Avatar: The Last Airbender fanfics, themes could include friendship, adventure, and the power of the elements. If 'buryinv' is a new character, perhaps themes could revolve around how they interact with aang and appa, like learning to trust each other.
I'm not sure specifically about 'aang buryinv appa fanfic'. You could try searching on fanfiction platforms like Archive of Our Own. They have a vast collection of fanfics related to various shows and characters, and you might find something relevant there.
Well, first of all, Archive of Our Own is a great place to look. It has a vast collection of fanfics from all kinds of fandoms. So, start by going there and using their search function. Another option is FanFiction.net. However, not all fanfics are on these two sites. You might also want to check some Avatar - The Last Airbender specific fanfic communities or forums. Sometimes, fans share their works there that might not be on the more well - known platforms.
He could meet his future self. It would be an interesting encounter as he could learn from his future experiences and wisdom. Or he might meet people who have studied his past adventures and see himself through their eyes.
Possibly they are random villagers who were caught in the crossfire of a conflict between different bending factions. Aang, being the Avatar and a symbol of peace, feels responsible for burying them and ensuring their spirits are at peace.