They all took their time.
One that seemed promising rejected me over a botched take-home-project.
Another one didn't talk to me vor over a month, then cam suddendly back with a "yes".
All felt pretty uncertain until it worked.
After that I got better in those kind of interviews. Knowing what to say and what not.
At one point I started blogging and that helped with telling people what I know (just read my blog).
Now, I write articles as my main job, lol.