This tutorial will show you how to create an awesome abstract light which just exists in fairy tales!
Here is what we will try to do in this tutorial:
First of all, you have to get the original image at here which is in a very large resolution. If not, you can use the image below (in a lower resolution)  In fact, we don't need that small glowing circle because we can easily create one with Photoshop by going to Filter >Render > Lens Flare, but this image saved us a few steps ^_^ Now let's start to photoshop! Step 1: Open this picture in Photoshop. If it is too large, you can go to Image > Image Size and set a smaller size (I used 370 pixels in width). When you change it, the height will be automatically changed. Firstly, press D to reset your colors. Create a new layer, use the Gradient Tool (G) with Foreground to Background option to draw a line from top to bottom of your image. You can hold down Shift key while drawing to create a straight line. We will have
Step 2: Go to Filter > Distort > Wave and use these settings  Step 3: We will blur it a little so go to Filter > Blur > Gaussian Blur and set a radius of 2.1 pixels
Step 4: Now press Ctrl-I to invert our image 
Step 5: Go to Filter > Distort > Polar Coordinates and choose Rectangular to Polar option
Step 6: Now change your current layer's blend mode to Screen 
After this step, we will have
Step 7: Use the Move Tool (V) to place the center of our light onto the glowing circle
Step 8: Use the Erase Tool (E) to erase all beams on the Earth. You should also erase the right edge of our beams to make it more real, like this  Step 9: And ...erm... our image is rather dark, so we should make it brighter. In the Layers tab, select our Background layer and press Ctrl-J to duplicate it, here is my Layers tab after this step 
Now press Ctrl-Shift-U to cover its colors into black and white. Once again, change your current layer's blend mode to Screen. By the way, the Screen mode is used for knocking out dark areas, making our image look brighter Step 10: Now jump back to Layer 1, which contains our beams, press Ctrl-U to open up the Hue/Saturation dialog box. Make sure to tick on the Colorize checkbox and use these settings 
Well, it's all! Here is our final result
When working with image, you have to consider its size, colors, hue, saturation to adjust your parameters appropriately. Sometimes your settings only work with a particular size!
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