Paint!
So, I went over it a couple times with Dremel & brushes, trying to blend the new with the old, (taking Freak's & GreenOne's advice to heart!) Also taking a page from Einion's book & trying to approach dry-brushing in a much more patient manner; liking the effect so far..
Just starting to lay in some color, trying to give the deely-boppers on the face a fleshy feel. May yet go over them with OSL red from the eyes, as Funnymouth suggested. I plan to come nack in with some darker browns & greys to create a mottled effect, kinda like a hippo, or the Predator. Thanks for all the expert tips, you guys. Please feel free to make further suggestions as I go along. More photos to come...