Enough Backstory, On With the Action!
by David A. Fryxell from www.writersdigest.com  see link below for full article.
Condense and time the delivery of a character’s history to intensify your reader’s interest in your nonfiction story.

Here are quick tips on writing a character’s backstory:
•When writing a short profile, only a few sentences of backstory may be needed.

•Grab the reader’s attention first, then begin a character’s backstory.

•Explain your character’s backstory soon enough to help your readers understand the main action.

•Choose a specific time to give a detailed profile, when a character becomes most crucial to the story.