Step 6: Scumbling for More Texture
Artists using traditional media will often finish a pastel drawing by brushing the side of the pastel lightly along the peaks of the rough art paper. This technique, called scumbling, causes colors to blend optically and adds texture. To scumble electronically, select the Hard Square Pastel variant of Pastels from the Brush Selector. Apply strokes lightly using a color sampled from your image with the Dropper. I used scumbling in my painting to add speckled light to the sky and sunrays and to add texture to reflected light on the foreground water. You can also see brushwork suggesting luminous haze on the far hills. Figure 12 shows a detail of the in-progress painting with scumbling.
Figure 12 For subtle texture interest, I brushed lightly with the Hard Square Pastel.