SteveZas wrote:
Here's my stab at it. original>upscale>restore original with greater detail>denoise>upscale>restore original>detail hair, nose edge, lips and eyes>create a few layers>mask>and finally layer blend. I concentrated on the face and forgot to get some of the artifacts out of the background. There is a completely different route I haven't tried yet, but I think this should work OK.
Whoops!! I forgot to resize down. The second two are probably easier to view when you enlarge the download. There are a couple of subtle differences between the larger two, and also the same for the smaller two.