Yeah I know it has some blue in it but what the hell...LOL  
Anyway I used decal paper painted in the cammo color to do this 
since I ruined a model Trying to freehand / mask with clay and 
paper / and anyother method to try and do this patten.
  In the end the decal film cut in the cammo pattern worked the best.  
here are the photos 

this is the last set.  I'll send you some new photos of my PGM that
 appeared in the model ship journal in a few days.

May the schwartz be with you...