Soldjah, Did you only use the airbrush on that photo? In that case i REALLY don't know how to use that tool! Could you give me some instructions on how you edited that image?
Basically, I used the clone stamp tool on the original picture just to fix a few imperfections, like freckles and whatever else.
Next, I copied the layer to a new layer, and used Gaussian Blur on it (about 5-10 pixels) and then used a blending mode of screen or vivid light (I cant remember which one). This will give that soft "glow" effect to the picture.
After that I just made a new layer each for the lips, eyes, and hair and coloured with a solid brush in the general area where I wanted the new colour to be, and used some blending modes like dodge, linear dodge, multiply, etc until I found something that looked nice.
The whole thing took me about 5-10 minutes really.
If I still have it, maybe I can send you the PSD file so can see what I did