The hair should not be your top priority right now. Her eye is all too far to the right, and compared to her nose and mouth it should be higher up and would require you to extend the top of her head. Her earlobe seems so be separated from her actual ear, so the ring looks like it's connected to her neck. You're also using an incredible amount of colours for the skin. You could do this with four or five, but that's up to you.
I think it would be beneficial for you and those making the crits to see the reference. If you are trying to make it look like the person in the picture, it's usually never a good idea just to rely on memory. I know you lost it, but try a little search first.