I am at the point now where I simply need to finish the cloak and then add the piped edging to it. I'm going to experiment with how I create the feathery edges of the cape by first creating a transparency. Because I am uncertain as to how to model so many details without creating excessive geometry. this may of course be the only way, but there is no harm in trying. I am also hoping to apply a two-tone shader, so that the hags head doesn't disappear into a black abyss when the hood is raised.
Here I am just beginning to create the UV snapshot ready to take into Photoshop and test the transparency idea. I hope it all goes well, otherwise that cloak mesh is about to get very very dense!!