The entry for music creation is really not high.
It first resides in your own, personal, self appreciation: do you feel yourself legitimate to sing, to play, to say something, for yourself, or to present to others?
That's the only valid question.
The rest, all the rest, comes from that. And it does not require to be complicated or complex or clever music at this point.
Sure, you may start with the practice, with the education, the experimentation, if you have not answered for yourself that first question, you won't create/play music or songs, you'll just apply a rulebook.
Then, another totally different question may be, can you find a way to get a sufficient revenue from that activity. But that's another question still.