Hello Cindy,
Welcome to the forum! You did an outstanding job on this copy. The only thing that stands out to me on a quick inspection is that the yellow part of her turban is not as yellow in your painting as it is in your reference reproduction. It may be due to the digitization. The on screen appearance of the painting is often not faithful to the actual painting. Here the yellow of the turban in your painting appears close to the skin tone of the face.
A while ago Michele Rushworth started an exercise/challenge featuring this painting. You might find it interesting:
http://forum.portraitartist.com/show...&threadid=2438
After completing the exercise I decided that the world didn't need another copy of this particular painting, so I modified (some say corrupted) mine into this:
http://forum.portraitartist.com/show...&threadid=2865
There's also a link in the first thread to a similar challenge on the Wet Canvas forum. Hope you had as mich fun doing this one as I did!
cheers
John