Buy a website domain and hosting and set up a website using WordPress or Squarespace or Wix or something like that. Put your work online AS SOON AS POSSIBLE and start gathering email addresses from prospective customers. Take a look at what other drone service companies are doing to see how you might structure your website / tell your story.
If you're serious about building a business, you'll embrace the concept of a marketing / sales funnel and start working on filling in the gaps as soon as possible. Your website will ultimately become your best sales rep, so it's best to start working on that soon.