Compositing Quick Tips - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 284

3. Grab the Brush tool. In the Brush Preset Picker, choose number 134, which looks
like three blades of grass ( Figure 5.3 ) . Click the Brush panel icon ( Figure 5.4 ) so
that we can adjust some settings and make brush 134 perform how we need it to
for a realistic horizon line.
Figure 5.3