awww i love it! Funny and cute ^^
I'd say have a consistent schedule (once a week, twice a week?)
Have you promoted your work here on the forums? Also get engaged in the community, be genuine.
Post on social media (insta, twitter, tumblr still a thing?)
When people sub to you thank you on their wall (I still feel uneasy about this though, maybe people hate it?)
Ad revenue is very little though, so don't get your hopes up too high on that. I think you'd make more revenue opening a patreon or Ko Fi as you already have.
good luck!