OK I made some time for a few quick pics. Hope it's ok.
This is the earring piece as it is now, after cutting one off.
You have to cut it parallel to the square-ish base of the ring keeping the base and rig together.

Use the base of the ring as the "arm" of the monocle and glue it only to the face so you could change the hair if you want.
I found it fits better in other types of hair, like the classic pointy one. As you can see.
And I jsut thought that you could even heat it a little bit and press it against the face so it takes it's rounded form. Another tip could be that you can shape the base of the ring to make slimer, so the area woudn't be so heavy looking.

Hope it helps. If I missed something let me know!

Gaston