That said, there's so much more to this than simply selling your products. If you continue to treat your hobby like a hobby, then you won't generate steady income.
There are many things to consider when transitioning your hobby to a business. I know this may sound like a lot, but it's easy enough to do once we break it down.
First, when you are deciding on your name, make sure that you're not limiting yourself. For example, if I started a business named "Katie's Bows," I would be limited as far as what I could offer. It would be hard for me to branch off into onesies and t-shirts.
In actuality, my creative business was called Katie Did Creations. I wasn't limited by any particular product, and people knew that what I created was probably handmade.
The way that you should register your business varies by...