That’s why I chose to add some highlights to make certain areas pop, in particular the area around the eye and a bit of the hand.
To do so, I added a Levels Adjustment Layer, decreased the blacks a bit by moving the black Output Levels slider at the very bottom slightly to the right. After that, I went ahead and adjusted the gray and white RGB sliders in the middle of the panel by moving both slightly down to the left.
Since I didn’t want to have the highlights on the entire portrait, I inverted the mask of the adjustment layer. You can invert a mask by selecting it on the Layers Panel and then pressing CMD + I on a Mac or CTRL + I on a PC. Alternatively, you can go to Image > Adjustments > Invert in the top menu bar.
Once you have inverted the mask and hidden the effect, you can choose a soft white brush, lower Opacity and Flow, and start painting on the black mask of the Levels Adjustment Layer. This allows you to bring back the highlights exactly where you want to have them on your portrait!