8 A change in atmosphere
I make three new Solid Color Layers and I drag the Fill slider down to 0 per cent. From the Add a Layer Style button I select Pattern Overlay. This opens the Layer style window, and clicking the Pattern thumbnail I navigate down to one of the textured patterns I created previously which resembles large dust fragments. I set the Blend Mode to Multiply, reduce the Opacity to about 70 per cent and click OK.