This is just a doodle? This looks like far more than a doodle.
There is one little thing, and this might sound a bit petty and nitpicky, but there it is. Her mouth looks just oh-so-slightly too far towards the right for the angle her face is at, and it makes her face look a little odd to me. It's a bit jarring to my eyes. I think if it was just a hair further to the left, it'd be in the perfect position. However, besides that one little thing, this is pretty excellent. The coloring is REALLY well-done, and one thing I definitely like about it is that it's not too flashy and in-your-face, but is rather a bit subtle with muted tones (particularly the deep blue of her cloak).
Overall, this is really well-done. Nice.