1. Create new file.

2. we have selected the following colors for the sand texture.

photoshop sand texture

3. Filter > Render > Clouds

photoshop sand texture

4. Filter > Noise > Add Noise (Amount: 7 Uniform, Monochromatic)

photoshop sand texture

5. Create the duplicate of background layer and select the top layer.

6. Change the blending mode of the top layer to Vivid Light.

photoshop sand texture