Use the next shown color for the mentioned processing:

The Dodge Tool will be helpful in representing the flares on the girl’s hair:

Try to make the hair more voluminous also, making its edges sharper:

Represent the girl’s eyes on a new layer:

They may be created with a simple brush and the next color’s nuances:

Make the corrections on the contour, applying the Eraser Tool (E). Set the Opacity on 20% in those places the contour is too sharp. Create a new layer and apply the brush to represent the girl’s eyebrows:

Make visible gain the background:

The picture is finished!

View full size here.