Sounds brave and exciting, Maranara! I recently retired from teaching and have been attempting to supplement my income with my art, rather than substitute teaching or getting a part time job at Walmart. With my art, which is unique, and which I thought up completely on my own copying no one, I have had lots of people come by my booth at shows taking close-up pictures (without asking) and questioning me about what products I use, step-by-step, etc. This has been going on for almost 20 years now, and I've yet to see anyone copy me successfully. So I stopped worrying about it. Let them click away with their cameras, write down a list of my materials. It's a free country, after all.
I would say, though, if you have a completely new and unique product, you might want to do some sort of legal copyright thing. (I know not exactly what that would be.)