Character motivation and back story
How often do we make things up about other people, based off the smallest pieces of evidence?
A random tweet.
A profile pic.
A like.
A comment.
A follow.
We are always making up stories about other people—and you can apply that to your fiction and non-fiction too.
Revealing character and character motivation one tweet, photo and comment at a time.
You can even be playful about it—leading the reader to make up their own stories about what they think they saw, heard, felt. Who they think this character/person is.
You can use back story and misdirection to create suspense and engage the reader.
Even in non-fiction, you can play with how predictable/unpredictable you/the narrator/the reader are.
As you do, you might find you know less about other people than you thought you did.
You might even learn a thing or two about you.