Just start basically and see what happens and see what kind of interest there might be out there for what you have to say, especially if you already have a following on other platforms as well.
Ship fast, learn faster
Craft → Execution Sense
The more you ship, the more you learn. And that's why it can take years to build up expertise because you just have to ship a lot of stuff.
The real genius isn't to dot every eye, to cross every team before you get started. The real genius is, what do you do when shit goes wrong? And I believe rapid recovery is the key to success.
As a product leader, if I'm airing on the side of which side of the spectrum I want people from, I generally will take people who are good at execution over people who are good at generating ideas, because of course there's always too many good ideas that a company need to focus and execute well on the best ones.
If you just completely start over and try again is much, much higher than if you just try once and then just keep banging on the same thing that didn't work.