To make great things you need to first start making things.
Your first few writings might suck, your first few videos might not be great, your first few photos might look bad. When starting out, what matters the most is to just start moving first. You can always improve and get better at it along the way.
If you’re waiting for yourself to be fully ready, to know everything about it, to have all that you need, you’ll never be ready. You just need to be ready enough.