Probably one session left to finish this.
Up close, there is still quite a bit to do. We Copyists must keep the copy and materials at least 4 feet from the painting, so adding a couple feet for the distance to my eyes, I'm actually about 6 feet from the painting. From that distance, my copy looks amazing; but then I step up close, and the perfection in the original makes me want to hang up my brushes.
Lievens did quite a few paintings of this same model. Here are some links with images of other "tronies". I think it had to be the same model.
Sotheby's and Christie's
The magical part of copying a work is not knowing how some of the effects were created, then accidentally stumbling onto those methods while working. Like happy accidents, those "ah-ha" moments are what make the exercise so valuable.