3. Repeat this process by adding yet another curves adjustment layer, this layer will be used to create the cross processed look. Inside that curves adjustment layer you will select each channel individually from the drop down menu, begin with the Red Channel. The basic rule of thumb is to raise the red and green in the highlights, and to drop the red and green in the shadows. The reverse is true in the blue channel.

4. Drop the blue in the highlights and raise the blue in the shadows. Note as you work through the previous steps that much of the adjusting is based on your own personal preference. Each of your adjustments is up to you and should match your vision of how the image should look.At the conclusion of these steps, the result will resemble a twisted helix