Hi Mick,
for the color profile of the Fw190 I use two different program for make the draw.
first I use coreldraw for make the real drawing with all the line art, and i put on one layer the aircraft basic color.
after I export the draw in photshop format, and i use all the illustration basic thecnique of No.1
If you and Srecko are interested i can try to make one little tutorial about my tecnique.
regards
Santino