Max, that looks so much better!
Not wanting to push you over the edge....but I still see a couple of things that you could fix.
As Ausimax said, there is some clean up in the background.
His nose does not look like it's all there at the tip and the nostril (I would copy that part from the girl to his right)
His right eye does not match the original ( look at the brow line to see the difference).
The other eye could probably be a tad smaller.
His neck does not look natural along the line meeting with his shirt (on the missing side). Also, his shirt would not be completely flush with his neck as it is fabric laying over his shoulder, and would be raised higher.
A good trick to get a fresh look at your work is to leave it for a while (maybe overnight), come back and flip the image horizontally. It's a great way to see areas you may have overlooked on the whole, while you were concentrating on a particular spot.
Please keep in mind that I have a perfectionist approach to restorations. My thinking is that a restored image has no value if it does not look like the individual. If I notice these things, the people who actually know this person will notice them as well. This work can indeed be arduous and often more frustrating than rewarding.
Hopefully I've not discouraged you, as you are so close on this.