Characters

I’m thinking a lot about creating characters at the moment.  I feel like there is someone I want to get to know just hovering beyond my perception.  There are a couple in fact, I’m hoping to tell their stories soon.
My creative process is image based.  Sometimes a single image gives me a character and the story grows from that.  Often the image and idea spark and off I go.
Character is the imperative, I try and give my characters a sense of place and weight.  Details that flesh them out and bring them to life.  There are many stories out there which fail to work because the characters are not driving the action, the plot is imposing stupid choices on the characters.  But that is a whole other post.
Some writers know everything about  their characters, create playlists which can be fun, I tend to write conversations my characters might have, get them to talk to me.  It might sound crazy and I am half convinced a good proportion of writers tend towards crazy.
The girl with flint flecked shale eyes, watched the door. She paced each measured stride an attempt to stifle her need to be anywhere but here. Childish hands fidgetted like a pair of angry birds.  She pushed her thumbnails into the soft pads of her index fingers.  A thick cascade of almost black hair masked most of her expression.
So who is she? I can’t wait to find out.