I may not do much more with the faces/heads before trying to make molds and cast masters. I'm not fully satisfied with the mouths at this point, but I may just leave them as is (these are for armies, not for high art). I don't think I'll try to make eyes (I don't tend to paint the eyes anyway - I hardly ever dot my eyes - lol). I figure I'll add hair, whiskers, bonnets, etc. as needed.
I may try to refine other parts a bit, such as the lower legs on some. And I think I'll add sporrans, dirks, bayonet scabbards, and shoe buckles. Not sure how much beyond that I'll go on the base figures.