How to be a succesful freelancer?

I am a makeup artist but I am not making money. I have a job in a beauty store that I don’t like and I want to be a freelance makeup artist and make big money from it.

I have a lot of marketing training from different makeup artists but I don’t practice because of my doubt to get any good result and my fear to be disappointed if it doesn’t work.

What kind of questions should I ask myself to move past my fear, doubt? I need a better mindset.