>>6053094An off-black.
>You just keep slowly masking off finished bits then adding the colors?Yes. Usually you go from the lightest to the darkest colour since that makes it easier to make things cover properly, though I've deviated a bit here, the sprayed-over tape you might be able to see hides a darker green first colour.
>The at certain points you can blend the areas together with some shading to not make it not so obviously sectioned off?Most camo is hard-edged, so you just leave it like that (the goal is to create contrast in shapes different from the item you're trying to camouflage, so the brain sees and promptly ignores that instead of a tank/soldier/mech). For soft-edged camo you can either mask, paint, unmask and then go over the edges with the airbrush freehand, or you just skip the masking altogether and freehand the entire thing.
Another option to get ever so slightly fuzzy edges is to put the masking a bit above the model, you might use blue-tac and let the edge be very rounded to produce overhang, have a hand-held mask that you hold a bit above, or maybe make such masks and then blue-tac them on to place them a bit above.
