Yay!
So, first I duplicated the Background layer, in order to use the Liquify filter. Using a big brush (as big as the eye and eyebrow area together, roughly) I massaged the eyebrow down to a nice shape, and a bit lower. As you can see, I ignored the weird wonkiness I was inflicting on the glasses - that doesn't matter a bit:
Here's a screenshot of the mesh in Liquify, if it helps:
Then I pressed OK to get out of Liquify. Then added a mask to the liquified layer, so that I could prevent the glasses being warped:
Finally, a cloning layer to tidy up a few areas:
Hope this helps.