I see a lot of miniatures posted on this and other forums where the metallic paint has just been painted over a light undercoat. Warhammer TV seem to encourage this and maybe its because more recent GW metallic paints allow for this. However I have always painted any metallic area black before putting down the metal colour. I feel this gives a better result, although it may just be old school thinking. What do others do and or think? I have never had the courage to try NMM so I go about metal painting as described above.