I'm back to Fix it Friday! Yay!
Original (Thanks to Helen John Photography)
Steps in GIMP:
#1 Crop | Auto White Balance | Color Curves | Decrease Saturation -10 | Smoothed skin using smudge tool | Contrast +10 | Color Balance Cyan 10 and Yellow 20
#2 Duplicate #1 | Desaturate for lightness layer opacity 75% | Flatten