That's where my ear went! Give that back!
Yes, I'm sculpting them in place, but trying to make them look real and separate. I'd like to be able to cast the head and glasses together from a single mold. I'm attempting to use paper thin webbing that will easily be removed with an exacto blade to let them "float" on the face. I used this technique to allow a tendril of hair to fall in front of the Joker's face to nice effect. This is much more complicated to get right, however. If I can't do it satisfactorily, I'll make the glasses as a separate casting to be glued in place.
The lenses will be open, but I will have a little ledge on the inner frame into which you can glue a piece of clear cellophane or polyethylene (like from "blister" packaging) cut to size. Should make passable lenses.