12 Utilising subtle photo texture

While I render most textures by hand, in some cases it can be useful to incorporate some subtle photo texture. When rendering the carved rocky monolith behind the figure, I utilise some photos of sea rocks to place in some additional texture that would have been painstaking to render completely by hand. To add in the rock texture, I use it on a lower Opacity Multiply or Overlay layer so it can interact with the tones already painted in.