The way you phrased it, it sounds like you already knew what you wanted to do with the cloak. Ask again explicitly on FoD.
As for me, continue the highlighting of the fur on the inside - I'd suggest grey on the parts you've not done. And for the back of the cloak, I'd just highlight up with a mix of the colour you've got and some Bleached Bone (or any similar off-white) until you're happy with the result.