2. Then filter-blur-Gaussian blur is performed on this channel, and the blur radius is set to 2 pixels.
3. Then press CTRL+L to execute the color scale command of this layer, and set the input color scale to17/1.00/168.
4. Press the D key to restore the foreground and background to the default state, and then use the black brush tool to smear out the places on the background that don't need sharpening.
5. Hold down the CTRL key, click the red copy channel with the mouse, load the channel into the selection, then click on the Layers panel, and then copy the background layer, and execute Filter-Artistic Effect-Painting and Smudging, set the brush size to 1, sharpen the program to 25, and set the brush type to the default simple.
6. Finally, copy the background copy again to get the copy 1, then pull the copy 1 between the copy and the background, that is, from the upper position to the middle position, and then change the opacity of the copy 1 to about 30%, and change the blending mode of the copy to color filtering, so that the picture will look brighter.