Ok I sketched out 2 girls the other night, the first one of which I already showed you.  After the encouraging response from you guys I was compelled to finish the second one...
Stage 1 & 2 - Rough pencil sketch and scan / pen tool trace
 
  
Stage 3 & 4 - Fill in skin and airbrush in the tones
 
  
Stage 5 & 6 - Airbrush in the hair, clothing (what little there is) and detailing
 
  
Stage 6 - Finished product!
 
Enjoy!  
