Please advise, how much is the approximate cost of a photographer's wedding follow up in a day

Most should be between 300 and 1000.

Improve your photography skills

Important is the shooting technique

Photography industry, there is no accurate pricing, it all depends on your skills, you shoot good, then expensive people booking, you shoot bad, and then cheap, no one asked. The most important thing is that you can't afford to be sloppy, and you have to look for perfection everywhere, even if you're not rich, you're willing to spend more money to make sure that you get married in the right way.

Learn how to meter

Good metering is the only way to have colorful photos, learn how to use a light meter, and try to choose a brightly colored background, such as the street, when shooting, no matter whether it's a tourist photo, or a portrait photo, it's very suitable.

Reasonable camera parameters

The parameters here, in addition to metering there are appropriate other parameter values, such as shooting group photos, you need a small aperture, shooting dance, you need a high-speed shutter, turn on the camera continuous shooting, know the difference between some of these.

Specialize in practicing a certain scene

To get improvement in a certain angle of the photo, practice is the best way, for example, shooting humanities, shooting craftsmen, shooting news breaking news, know what angle to shoot, know how to communicate with the person being photographed, all is an art.

Working hard to improve yourself is the only way to make a lot of money.