The author's idea of beautifying the picture is very good. Processing before the author is not in a hurry to color, but first to strengthen the image level, enhance the character part of the texture. Before the beautification in place, the later color palette is easier to start.
1, use Photoshop to open your image.
2. Copy image layer and apply USM Sharpening filter > Sharpening > USM Sharpening. Apply the following settings: quantity: 100, Radius: 1.0, Threshold: 0. Layer opacity 100%, blending mode is set to normal.
3, now we have the image sharpening, but we only want our characters to sharpen the effect, so we use the mask, using the brush tool to smear.