Having just spent the better part of an hour sanding Wormly's head (there's still a dent in the back of his skull...Wormly may need a rather high collar...) and as I'm about to start painting, it occurs to me that my readership having been helpful every step of the way so far, I should solicit advice about painting 3-D. While I have a vast array of acrylics and no fear of them, I don't actually know jack about painting physical stuff beyond "layer." (I never painted miniatures.) Start dark? Start light? I managed on the flesh tones of the previous faces, but since Wormly will probably be a hopefully-mottled green with yellow-pink underbelly and mucous membranes, I'm a trifle out of my depth. Any advice?