Change this layer mode to Soft Light 100% and use a layer mask to reduce the effect on the middle or any details you feel too dark.
Create a new layer and use a soft brush with the color #a5abc1 to paint on the bulb above the head’s hole. Change this layer mode to Screen 100% and use a layer mask to reduce the light on top of the bulb and the lower area.
Add a new layer and use a soft brush with the color #f6f8ff to make the glowing light around the bulb stronger. Alter this layer mode to Soft Light 100%.
To add some light to the head contour, make a new layer on top of the layer. Use the Polygonal Lasso Tool to select the contour of the head’s hole and stroke it with the following settings. Set the stroke color to #f6f8ff and add a mask to this layer. Use a soft black to reduce the effect and apply a Gaussian Blur of 4 px to this layer.