Why has come to my mind the image of a norse valkyrie? Not only the blonde hair or the braid, is also that look in the eyes, the whole expression, like seeing throught all masks... really, really beautiful.
The picture itsef is not at my taste (too much blur) but otherwise the compo is great. I do love your expression. I'm a great fan of smile in portrait but well, in this case, I do think that's an awesome portrait, eyes, mouth, brow... everything's just perfect.