So now there’s no excuses, sorry! Just get out there and get started.
Serious time: Obviously this journey is a longer road than this, and a bit more complex when it comes to the legal side of things (registering a business name, hobby vs. business for tax, etc) and so I encourage you to do your own research in this area first, but when that’s done, if you have something ready to put out into the world it’s as easy as this to get started!