At this stage, I'm happy with the definition of the face, and continue to paint the hair. For the hair itself, I created several different layers, and used a speckled brush for more definition. The process was repeated several times until I got desired results. I could have taken this a bit further, but I figured that if the hair was kept more loose, it would bring more attention to the face.
Although I was satisfied with the rendering of the figure, the colors felt a bit monochromatic. Using the color balance tool, I introduced a more saturated turquoise color on the background, and warmer tones on the figure herself to make her pop. For further color enhancement, I created a new layer set to color, and enhanced the skin tones of the figure significally.
It's also imperative that the figure and background work together, so don't be afraid to apply colors from the background to the figure, and vice versa.