Go to Filter> Blur> Radial Blur. Set the amount to 100, blur method to zoom, and adjust the blur center to where you want the blast to come from. You'll have to guess where the location because there's no live preview, so just set the quality to Draft for now and take a guess. If you didn't get it where you want it, open the filter again and make the adjustment again. It should save your previous setting so it should only take you a few tries. Once you got it where you watn it, change the quality to Best and then click OK.
Step 6
Go to Image> Adjustments> Brightness/Contrast. If you are using Photoshop CS3, checkmark Use Legacy. Increase the contrast to 75.
Step 7
Now press Ctrl+F to repeat the previous Radial Blur filter again.
Step 8
If you want to make the blast more vivid, go to Image> Adjustments> Hue/Saturation. Increase the saturation.
