Like Stephanie Mac said, you don't want to remove shadows. Shadows aren't a bad thing, they're what make things look lifelike and three-dimensional instead of flat and fake. In fact, a lot of the time shadows are added to give more dimension to bodies.
With FS, you want to work on removing blemishes with the healing brush and clone stamp. Not every inch of skin and not every single speck, but ones that detract from the rest of the image. You got some of them in your try, but also created others in the process by trying to lighten areas that didn't need to be - such as under her lip, her temple, and on her cheeks. Go easy on it. You don't need to do extensive dodge and burn at this stage or on this image, and you shouldn't be using the actual dodge and burn tools if you didn't already know that.
Try again, practice makes perfect.