I've been working with Karen Wiesner’s First Draft In 30 Days on creating characters. I like her method because I don't have to do it all at once, I can add to it whenever I discover something new and relevant or when I need something new and relevant. I'm really enjoying the process and thought I would introduce you to the two people I've been spending a lot of time with.
Meet Maggie Stokes:

At the start of my story, she is 18 years old. She is a high energy person with too much ambition for her own good. She wants all there is out of life, but life has a way of trying to hold her back.
Arthur Case.

Arthur was orphaned at the age of 8 and now seeks the attention and family life he never had. Unfortunately, he is in love with a woman for whom marriage and family are the last thing on her mind.
Stay tuned for more. I'd say preorder your copy now, but at the rate I write, you might be waiting a few years!
Do you use pictures to help develop your characters? What other means do you use? Do you alter them as you go or stay with a strict character sketch from the beginning?