Let's see... (I'm a comic artist btw, so if you're a writer then I won't know much about how to promote yourself)
Sharing wips, concept art, promo art, thumbnail art for updates on Social Media (Twitter, Facebook, Instagram, Tumblr, Discord, Reddit)
Wips and concept art are usually on my dashboard/wall, promo art and updates I make sure to share them everywhere:
- Facebook groups, I think I'm in around 80 more or less (Both English and Spanish)
- On Twitter I try to participate on ArtShares from time to time, keeping things short and using hashtags, I try to not reblog many things the days I update or bring new art so it can be seen easily whenever someone checks my profile
- On Instagram I also use hashtags, but I also use stories
- On Discord and Reddit, I share in all places I'm in that accept self promotion
- Spam in the promo threads here (I also use my Tapas.Io wall for updates, just in case)
I must say, synchronizing my FB and Insta was a really good idea, and using the Business page helps me avoid scrolling on the sites unnecessarily, and just focus on making the post and boom, covering two places at the same time.
Also, doing all this kind of takes me less than an hour. So, put a nice playlist, copy paste your post and done. Here in Tapas, the trick is either add a letter, separate a pharagrap or even adding or removing certain exclamation signs.
Another thing that I do is stream my work (Despite I don't do it often, yet, I highly recommend streaming your process even if it's "spoilery", but I can guarantee that the sensation of being watched kind of forces you to work harder, avoid taking many breaks or getting distracted).
I use Twitch, but you can totally use Restream.Io if you want to make a livestream in both Twitch and Youtube at the same time. (And I must say, you're not making extra content with this one since you're making the comic at the same time you're exposing it)
And then, you can later use the saved stream, either for TikTok, Reels, by just editing and adjusting the format, the speed, cropping, and such.
That's at least what I personally do, is not much but is something.
I've seen other people do Challenges, Trends, Tutorials, Memes, 2-frame animations, and similar in order to promote either the characters and/or the story. I forgot to mention that I try at best to do this twice a week, when it comes to work in progress and similar, but the whole bundle I do it whenever I update