Originally, I would post drone stuffs on public and only put some drone variants on fanbox.
In future they would only be on fanbox for certain amount of time before going public (mostly based on popularity)

other posts beside drone stuffs will remain on public

If you know any way to help growing audience like offering to some eldritch god / joining some secret furry club / draw in a special style / tweak according to mystery internet algorithm...etc, you can reply too