[quote=@t2wave]
Hm... I have an image that I want to make a character from but I'm not sure how to write the history.
[/quote]

I start by laying out what I want the character to be. Powerful mage? Wimpering coward? Kind? Mean? Lazy? Mysterious? [s]Mechanical Arm[/s] ect. From that I imagine how, with in the world of the RP, they might turn out that way. 

From there I start where everyone starts: birth. Then I hammer out the details, piece by piece.