I don’t know since when, adjusting a special color tone to a photo and adding some text, patterns, etc. have been dubbed "non-mainstream" pictures. Then let’s try using Photoshop to create this “non-mainstream” pastel effect! Very simple.
Let’s look at the original picture and the effect first.

The effect of CMYK color adjustment method is as follows

The effect of Lab color adjustment method is as follows

We first choose the CMYK color adjustment method.
1. Select the menu "Image-Copy" in Photoshop and get the unnamed-1 [a copy of the original file, not a copied layer of the original file]. Change the unnamed-1 picture to CMYK mode, select the magenta channel, and adjust the color level reference parameters as shown:

2. Select the yellow channel to adjust the level of the same parameters.
3. Select the cyan channel and adjust the color level reference parameters as shown in the figure.

4. Gaussian blur the cyan channel by 2.8 pixels [see picture adjustment for yourself]. Then select the CMYK channel.

5. CTRL+A to select all. CTRL+C to copy. Then turn off unnamed-1.
6. After activating "Skin Correction", copy the image obtained by CTRL+V. Change the layer style to 80% Hard Light.
Next we use the Lab channel adjustment method.
1. Menu Image-Copy, get unnamed-1 [a copy of the original file, not a copied layer of the original file]. Change the unnamed-1 image to Lab mode, select channel a, and Gaussian blur 4.8 pixels. Then adjust the color level reference parameters as follows

2. Select the b channel level adjustment parameters as follows:

3. Select the Lab channel, select all, and copy. Close unnamed-1
4. After activating "Skin Correction", copy the image obtained by CTRL+V. Change the layer style to 80% Overlay. The result is as follows:
