Here's some thoughts:
1) If you already make something and you think someone else would be willing to pay you for it, you're already more than halfway to being an entrepreneur. All it takes to become an entrepreneur is to take one more step and sell your item for a profit and - boom - you're magically an entrepreneur. Notice that to be an entrepreneur you do NOT have to have/be a website, logo, LLC, S-corp, business cards, stickers on your vehicle, take venture capital, raise money, etc. You just have to provide a service or sell a product for a profit. That's it. Don't let all the videos, TV shows, and other sources complicate this. There are people who sell a product or service with a single page website and make more than $250,000/year.
Of course, you may want those other things (i.e., if you're product could result in someone getting hurt), you may want to be an LLC or get insurance, or whatever. But don't jump into anything you don't need to do
2) Start small. Approach likely buyers and see if they are interested. Stop by or call them. or send them an email with a picture or video. Ask for feedback: "Would this be useful or helpful to you?"
3) Know exactly what your costs are to make it and deliver it and how much you value your time. Think about a price - and then imagine you had 5 orders for them. Would you be excited about making and delivering your item at the price you've set? What if you had 100 orders? Would you be happy making that many for the price you've set? Will your product help someone else (person or business) save money in any way (will it save an employee's time?). Consider that when you're pricing it.
4) Despite what I said in #3, don't worry yet about size or scale too much. Ask around, see if some people are interested. If you get orders, great! Make a few, deliver them, get paid, and ask for feedback after the sale. Does this item help you? Do you want more? How do you feel about the price you paid versus the value you received.
5) Once you've done this, now a lot of questions will be answered. How easy was this to sell? Did you enjoy the process? How much time of yours did it take? Perhaps this is something you can do and earn your electricity bill each month or perhaps cover your rent for the month. Maybe less, maybe more. But don't worry about making it as efficient as possible until you have plenty of customers.
Best of luck getting started. I hope you'll share your ongoing story!