1. As shown in the picture, create a text in PS,
2. Then open the browser and search for sand and stone pictures, find a picture with a strong grainy contrast, and then Download and drag it into PS.
3. After placing the image into PS, open the color scale properties in the image.
4. Adjust the color contrast. If there is a strong contrast effect, Okay,
5. Then use the magic wand tool to select the highlighted points, then ctrl+j to copy the layer,
6. Then drag out the copied mottled points. In the original text, you can replace and adjust the image size; then open the color overlay command,
7. Adjust the color to be the same as the background color, so that the mottled text effect is ready.
8. Complete the renderings.