How to bring up a clean and transparent blues portrait?

Hello, everyone, I'm Senior Jiaxun. This is my first time to share a color matching tutorial. On the one hand, people like the color matching of this group of photos, and on the other hand, it can be regarded as my study notes when I grew up on the road of photography. Please give me more advice.

Shooting background:

That morning, the company took a publicity photo on the roof and found that the environment on the roof was suitable for shooting. We took advantage of our lunch break and took our colleagues who wanted to take a photo with her. The shooting time is from 1 to 1.30. Because it is cloudy, there will be no trouble with large light ratio. The model's clothing is similar to the environment, making the picture look clean and harmonious; In addition, although the shooting time was only half an hour, the shooting went smoothly because of the good expression of the model. Therefore, I have always felt that this group of works is in harmony with the right time and place.

Shooting equipment and parameter settings:

Canon EOS Sigma 6D 35mm f/ 1.4DG HSM

Exposure mode: Av file, metering mode: point, exposure compensation: +2/3.

Aperture: 2.5, shutter: 1/320s, ISO200.

Color matching steps:

1. Because it was shot with a fixed focus lens, it is necessary to remove edge vignetting through lens correction first.