I have the same kind of hair, exactly.
But I did this hair style for one of my friends. First her hair was in little twisties to the crown of her head, and then in the back, I twisted her hair in random directions and pinned it back. I curled her hair, Then I took all of the curls and pinned them down. She also had a few curls around her face. here are the pics:
I hope that gives you an idea! ((Only I would use bobby pins that match your hair color, I made a mistake and used black! :!

)