Author, Louise Doughty encourages writers to “…start to build up a body of material-anecdotes, notes, stories.”
Any writing you do can be applied to your character(s), to build depth of character, to help you understand their motivations, their thoughts, how they act, what they sound like, how they respond to their environment. 1) Take a previous piece of writing and give it to one of your characters. Re-write the piece. 2) Try sitting in a café and jotting down overheard conversations, then giving some of this to your characters. Re-write the conversation with your characters as the speakers. 3) Write a diary entry of a day in your life, then give this day to one of your characters. Re-write the entry as though it was a day in the life of your character.