1. Create new file. Using Gradient
Tool, with default black and white color fill the canvas like following
image.

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

3. Filter >
Artistic > Rough Pastels
(Stroke Length: 6, Stroke Details: 4, Texture: Sandstone,
Scaling: 100%,
Relief: 50, Light: Bottom)

4. Image >
Sharp > Unsharp Mask
(Detail: 13, Smoothness: 2, Light: Bottom)

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