Hoo boy, you're asking the wrong guy for NMF advice, but I'll simply tell you what I know. I would use Testor's gloss black enamel ( in the little square bottle ) for the base coat and make it as smooth as possible via wet sanding etc. That's the key thing I think. I definately use Alclad sprayed at about 6 PSI using a very light coat. To get different shades of Alclad for different panels , I simply vary the undercoat slightly ie. semi gloss black or even flat black here and there.
There's tons of ways to do NMF successfully but the above is the most successful way for me so far, but I am FAR from an expert. My first 3 attempts was actually " the horror, the horror " as Brando said LOL
Plastic Junkie did a Voodoo incredably well and i was lucky enough to view it in person at the Orlando model show. He's way more qualified to give you advice as to how to do it best in my humble opinion.