This was going to be a Halloween post, but with everything going on then, I forgot to post it.
I really went to town aging this chair. I like to create a sort of history for things as I age them, so that every stain, tear, or worn spot has a reason for being there. I make up things like "someone read newspapers in this chair, and got the arms covered in black ink"or "a leaky attic roof dripped on this section." Making up little stories helps keep the wear and tear logical.