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Step 2 : Click the Gradient Tool.
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Step 3 : Click where the white arrow points to in the top panel to edit gradients.
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Step 4 : Click the Gradient the sixth from the left, the one the small white hand points to. Click ok.
Step 5 : Now set the Mode in the top panel to Difference.
Step 6 : Drag with the Gradient Tool in any direction you like.
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This is how the image looks after the first pass. You will get something different. Do not worry about it. Just follow the steps.
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This is how it looks after the second pass. I have dragged for the third time. Drag in randon directions from any point to any point. You will have to this a number of times. It does not look interesting as yet, but it will.
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I have made a number of passes again. Up, down, sideways, drag with the Gradient Tool in any direction. Now it is beginning to look interesting.
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After some more passes it looks like this. You will get a different result, but it will be equally interesting. The more you drag in different directions the better it will get.
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This is what I have got after quite a number of passes. This effect is being created because the Mode has been set to Difference. That is the secret.
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Step 7 : Now press CTRL+J. This will duplicate the Background layer. A new layer -- Layer 1 forms.
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Step 8 : Look at the Layers pallette. You will find Layer 1 highlighted, which means we are working on this layer. Now select the Gradient Tool and drag a number of times randomly as before. The effect will keep changing every time you drag.
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Step 9 : Now in the Layers pallette click where the red arrow to change the Blend Mode from the popup menu. I have set it to Difference.
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Step 10 : I have opened this free stock photo which I have downloaded from
here. The site is
http://www.sxc.hu/index.html
Step 11 : Click the Move Tool.
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Step 12 : Drag the guitar image onto the other image.
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Step 13 : Press SHIFT+ALT and resize the image to fit completely over the other image.
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Step 14 : Look at the Layers pallete. The guitar image sits on the top layer. Press Enter to apply the transformation.
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Step 15 : With the cursor drag Layer 2 below Layer 1.
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This is how my image looks.
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Step 16 : Now change the Blend Mode to Difference as shown in Step 9. Drag the Opacity down. I have dragged it down to 60%. Thee is nothing hard and fast about it. You can try your own settings.
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The finished image.