Integration between lemmy and mastodon is clunky, I think it’s possible to subscribe and post to lemmy communities from mastodon but there’s no way to follow a mastodon account from lemmy.

Personally I think it’s very cool that different kinds of software can interact like this, it makes content more visible for everyone. I’ve also heard some people say they don’t like the formatting, and tags can be confusing because they don’t mean anything on lemmy.

My advice is keep doing it, just make sure to follow community rules.