"now, about the glare on the glasses frames"

haha, nay, that would be too easy.  I am a beginner since 4 months, not a COMPLETE idiot. By the way I found out the persimmon guy's method: Make a copy of the black background and paste it in a layer ABOVE. Using the smudge tool set to 65% strength with a 3 to 5px brush, paint in the lower layer.  In the end merge the (untouched) layer down.

This method does not give quite as good finish (as you can see), but as it is a manual method it might come in handy as a complement to Quest's solution.