[Alex]

To begin with start out with a blank canvas.
Note: This images are very big.

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I used a 400 by 200 canvas because that is a size that find very nice.

Then you with go to Layer, New fill layer, then gradient maps.

It should look like this.

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Double click the gradient fill

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You can choose watever you want for gradient. But making it look like this. Makes it look better in my opinion.

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Final product:

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