Step 2
Select the Gradient tool from the toolbar, move the cursor down to the bottom edge of the file, hold down the mouse button and drag straight to the top edge of the file. After this operation you will have a file with gradients ranging from white to black
Step 3
Click Filter > Distort > Wave , the Wave window appears, set the parameters as shown below
Step 4
Go to Filter > Distort > Polar Coordiantes . Polar coordinates window opens, set the ratio to 100% and check the Rectangular to Polar option
Step 5
Go to Image > Adjustments > Hue / Saturation and select the Colorize option, then change the following sequence settings: Hue: 200 , Saturation: 25 and Lightness: 0
Step 6
Next step, go to Filter > Render > Lighting Effects and set Light type to Omni , the remaining settings to default.