Domain: Photo Retouching Steps:
Create a new layer. Go to Edit > Fill and select 50% Gray.
Change the blending mode of this layer to Overlay or Soft Light.
Select the Brush Tool (B) with a low opacity (around 5-10%).
Set your foreground color to White to Dodge (brighten) or Black to Burn (darken).
Paint over areas of the image to add depth and contour without altering the original pixels.