I've looked this up a few times now, so I better stick it here to make it easier to find. Dice Tsutsumi has an awesome quick little step by step of how he paints. What's so interesting is how much he maintains his value, he establishes his value in the first rough sketch, then everything that comes after maintains that value. It has me thinking that that approach might be one of the reasons that Frazetta is so impactful. When you have a strong dynamic composition in just black and white ink, and you approach it this way holding onto your dynamic value composition, then you're just plussing it, not changing it.