Young Writers Society

Hey I'm thinking about writing my own Afterword for 'Life Of Galileo' by Bertolt Bretcht. But I had to ask: can someone other than the author write an afterword? And how is it structured?
Thanks in advance!

It sounds like what you're trying to do is write an addition to the end, based on how you feel the story continued, right?

This is what's known as fanfiction.

It's (usually) legal, but you cannot use it for profit. Anything you write that adds, changes, or branches from an already produced work of fiction (video games, tv shows, poems, movies, comic books, novels, ect) is known as fanfiction.

I'm not writing a fanfiction, its more as me imagining that I'm someone important and commenting on the themes and ideas behind the play and the author and his inspirations. Something that can be added at the end of the play to help reinforce the key themes behind it.

That is a theoretical review of the piece itself, and is a form of essay. So follow the thesis+body+conclusion method. Thesis is what you think about the piece (make sure it is debatable and your own opinion), body is a bunch of rambling on how your opinion is right, taking quotes from the piece, and in the conclusion show us again how your opinion is right.