You don't have to be great to start, but you have to start to be great!

The only way to do it is to get started doing, even if you don't feel ready. You have to get your message out there. You have to do the work.
Doesn't matter if you are not good at it.
Every master was once a beginner. You need to get started now. You will eventually learn a lot and get better along the way.
However if you are only collecting knowledge and keeping learning instead of applying all the knowledge you already have, you won't get results.
Achievements come from efforts. Get into doing it.