Colin, Welcome to RetouchPro!
You've made a nice start, but it will help to eliminate that dark background. I'm not sure, but it looks like you may have just colored over it, and that leaves some of the dark texture spots showing. Are you using Photoshop Elements, Photoshop,
PSP? If you are using a program that allows you to create selections, you can work on different areas on different layers. You can eliminate the ugly background and replace it.
Her face still has a bit too much of the news print (looks like it to me, anyway) texture and needs more clean-up before adding color. Add color in layers, using the Color layer blend (or Soft Light or Normal - with lowered layer opacity). You can find a downloadable image with realistic facial color tones here on the website -- Caucasian skin is mostly magenta/yellow with yellow being about 3% higher than magenta - a bit of cyan depending on the level of tan. If there is no color image of this lady to judge her skin color, use the generic Caucasian tones.
I think you handled her hair better than I did -- (hair is hard for me!

) -- when I eliminated the background, I had trouble seeing just where her hair left off and the background began -- you retained the shape of her head well.
You've got a good start -- you can do it.