3D Photoshop

The fist step is to find an image and open it in Photoshop. Then duplicate the layers and name the top one blue and the bottom one red.Once you have done this delete the background layer.Select the blue layer and go image, adjustments and curves then change the channel to red and put the out put as 0 and the in put as 251 and click OK. Then select the red layer do to image, adjustments and curves, change the channel to green put the output as 0 and input as 251, once you have done this change the channel again to blue and put the output to 0 and the input to 251 and click OK. once this is done select the blue layer and set it from normal to screen. After this you can adjust the image left or right to make it 3D.