先迈左脚...

Get a website first, put some videos there, also put some testimonial.

Writer some articles on weddings, for most people, it's their first time, so they are a bit nervous.

Your job is to establish yourself as an expert, post articles, and give them a bit education.

The end goal is to get people to use your service, so that they don't have to worry about all the details and have a once in the life time experience.