1. Drag one picture to another picture and turn off the eye layer of the above picture.
2. Go to the channel and copy the red channel and adjust the levels.
3. Open the application image, select the background layer as the layer, select the red copy as the channel, and blend-overlay.
Final effect:
1. Drag one picture to another picture and turn off the eye layer of the above picture.
2. Go to the channel and copy the red channel and adjust the levels.
3. Open the application image, select the background layer as the layer, select the red copy as the channel, and blend-overlay.
Final effect: