If you want to share what you’re making, dip your toes into the water. Some communities will appreciate the self-promotion as long as you do it in a sensible way, and other won’t. Right now, some degree of self promotion is great because it’s new content, which the Fediverse needs.
Let’s go even further than that. Let’s say that the most annoying people around the whole Fediverse are Hexbear. On the worst days, all they do is to organize to spam specific threads, which is indeed annoying, but that’s the extent of it. KiwiFarms is responsible for harassing people until they commit suicide for the heinous crime of being weird. Anyone aware of this who wants to associate with them has no place in civilized society.