1. Create a new file. Create a new layer. Draw the Elliptical button and fill it with the color shown in the figure.
2. Filter > Noise > Add Noise
(Amount: 7, Uniform, Monochromatic)
3. Filter> Artistic> Paint Daubs
(Brush Size: 8, Sharpness: 7, Brush Type: Sparkle)
4. Filter> Artistic> Paint Daubs (Again with the same settings)
5. Duplicate the layer and change the blending mode of the top layer to Color Burn. Merge down the top layer.
6. Layer > Layer Style > Bevel and Emboss
Change the settings according to the following figure.
Please remember to change the size to 27
Click Drop Shadow also.
7. You will get the following result.






More Photoshop: