While it’s cool to host your own Mastodon server, it’s not really efficient. A simple thing you can do, however, is to make it easier for others to discover your presence, if they already know your website. Try it out – search for “firstname.lastname@example.org” in your Mastodon instance. Also, click “follow” for SEO tips & other bad takes.
Why is hosting your own instance inefficient? In short, sending updates between users (followers, followees) means connections between their individual servers, and if everyone has their own server, it’s a lot of network activity.