with Marija Matijasec
Improve the colors on your image as much as you can. Even if your final mode is CMYK, do most of the editing in RGB -- it is much more flexible and editable than CMYK. And don't ever hesitate to use selections with various feathers while editing.
In this case I've started with curves and hue/saturation corrections -- image was too red. After that I've used variations to lighter image -- I lighter image in midtones and added red and yellow (see image 01). I find this method excellent whenever I have too dark image.
(Note: some of the enlargement images are quite large and may take a moment to open. Some will be set to 800 x 600 pixels, so some scrolling will be necessary.)
Now is time to start retouching. I've used heeling brush and cloning stamp to remove all blemishes and bigger imperfections on face (see image 02). Heeling brush is also excellent for removing ugly lines under the eyes.