
Most of this was done with curves. You can check your color info palette and it will tell you exactly what kind numbers you have going on. Initially, this shot had a lot of yellow, and a lot of Red. By playing with those channels in curves, you can lower the amounts of those colors so that you get a more even ration. I also added a 'Photo Filter' to this. It's right there in the Adjustment layers palette. You should play around with it some and see what kind of effects you can achieve. While I don't think it's for everyday use, it's still a useful tool.
What took the longest on this shot was cleaning up the straggly hairs that were all over the top of her face. This was done by creating a new layer when all of my color-correction was done, and using a combination of the clone tool and the healing brush. Don't forget, across the top of the information bar, at the top of your workspace, there will be a little drop-down menu that will give you the option of 'Current & Below', 'Current Layer' or 'All Layers'. Personally, since this is one of the last things that I do, I set it to 'Current & Below', that's what works for me.
And also, save save save your work as you go. There's been too many times where I've been almost finished with a piece, and PS has unexpectedly quit. Try to avoid that, cause it really sucks when you have to go back and re-do what you've already done.
I'll try to back to this in more detail soon, let me know if you have any questions, comments or anything at all.
Peace and have a great weekend.