I'm happy with the 'nose piece' bone and I fancy adding some bony eyebrows. Fortunately, the hole through the vertebra bone will accommodate a couple of rib bones after some gentle grinding and shaping.
A bit more grinding with my dremel grinding wheel, and I make a groove to seat the gold nose pieces of the specs.....all held in place with epoxy resin...yes, a bit of creative license here!
How to attach spectacle arms to the lenses? Rummage through a box [one of about a doz] of tiny watch parts. Gold winders fit perfectly, they should work.