I had learnt this effect a long time ago from a site which now don't remember, I had learnt it by heart at the time. Anyway, its a very easy, make no mistakes tutorial. Good for beginners. Step 1: Create a new document of, square shaped. If you want to later make it a wallpaper, cut down. Iâ€™ll use 1152x1152. White background. Step 2: Go to Filter > Sketch > Chalk & Charcoal with default settings (Charcoal area: 6, Chalk area: 6, Stroke Pressure: 1) Step 3: Go to Filter > Render > Difference Clouds Step 4: Go to Filter > Sketch > Chrome - Detail: 4 - Smoothness: 6 Step 5: Next go to Filter > Distort > Wave and give the following settings - Type: Sine - Number of generations 250 - Wave Lenght: 200 and 500 - Amplitude: 200 and 500 - Scale: 1 and 1 - Undefinied Areas: Warp Arround Step 6: Duplicate Layer and set the Blending Mode of the newly created layer to Lighten Step 7: Go to Edit > Transform > Rotate 180Âº Step 8: Colourise the graphic by pressing Ctrl+U or going to Image>Adjustments>Hue/Saturation with the following settings. - Check Colorize box - Hue: 243 - Saturation: 50 - Lightness: 0 Step 9: Merge the two layers by pressing CTRL + E Step 10: Give the command Filter > Render > Difference Clouds Step 11: Go to Filter > Blur > Gaussian Blur and give a value of 2.7 or so. Step 12: Go to Edit > Fade Gaussian Blur - Opacity: 100% - Mode: Soft Light And youâ€™re done! If you want to set the image for a wallpaper, just go to Image > Canvas size and specify the height of the document corresponding to the screen resolution. My final Image: Incidentally, this is the same abstract that I used to as the background for my earlier tutorial, Frizzly Frame.