The Best Decisions Are Made From The Heart

This is a story about a oc of mine for the show called Supernatural. It will be a romance between her and Dean. To me it seems like I kind of don't really have a good way to portray him. Give me some advice and I shall try and make it better!

*Read or the story won't make sense!*
~Description of my OC~
Name: Echo
Age: 26
Gender: Female
Background: Some of it is described in the chapter but if you want a better explanation I shall! Just comment and I will make it into a prologue.
Looks like: Long, moderately long blonde hair. Electrically blue eyes, pale skin. Well built, muscle from demon hunting and fairly developed. I tried to use a picture to make it look mostly like her.
Clothes: Wears a leather jacket, kind of like Deans. Wears blue jeans or black pants. Depends on if she is going to a bar or working on the job. Mostly wears band t-shirts.
*Need any other information just ask and I will*