Rhino Composite - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 384

Figure 8.10
11. Choose the Brush tool (B), click the Brush Preset Picker, and choose number 134
(which looks like three blades of grass) ( Figure 8.11 ). In the Brush panel, click
Brush Tip Shape and set Size to 30px and Spacing to 5% ( Figure 8.12 ) . In Shape
Dynamics, set Size Jitter to 0% and Angle Jitter to 3%. In Scattering, set Scatter to
10%, select the Both Axis checkbox, and set Count to 2. (No other settings should
be active.)