Sorry to add another post, but let me clarify:
Red channel:
Green channel:
from Omer: "I have gone to channels tab, chose [green] channel, copied the whole channel information (which is black and white) and pasted it on top of the original."
Then I blended with the "hard light' layer blend mode in PS. What's that you ask?
From the adobe help file on "Hard Light" mask: "Multiplies or screens the colors, depending on the blend color. The effect is similar to shining a harsh spotlight on the image. If the blend color (light source) is lighter than 50% gray, the image is lightened, as if it were screened. This is useful for adding highlights to an image. If the blend color is darker than 50% gray, the image is darkened, as if it were multiplied. This is useful for adding shadows to an image. Painting with pure black or white results in pure black or white. "
So when you apply Hard Light to the mask that you have defined as the green channel, it will steal the 'texture' data from that channel and apply it to the image.
Read through the thread carefully a number of times, you'll get the swing of things...