All jokes aside.
99% of what you do falls under Natural Talent, Learned Skill, and Knowledge.
The internet has made knowledge a rather touchy subject. Why memorize many details about things when the entire sum of human knowledge is available at your fingertips? While knowing minute details about a subject is useful, in the modern world, having a strong knowledge of WHERE to find knowledge is far more useful than extremely detailed knowledge about a subject.
However, if you truly wish to reach the pinnacle of a craft, you must learn about said craft. It's history. It's champions and Villains. This is but one aspect.
Natural talent isn't something to worry about. You have it, or you don't. If you have it, great, it will make the basics effortless. However, if you don't, do not fret. There are some barriers that cannot be overcome, but if you have the average talent of most, that is often good enough.
For example, I was once an artist, but I got jumped by seven guys, one armed with a baseball bat. They beat me into a coma and now I cannot hold an impliment of inscription without it trembling slightly. I no longer can draw a straight line. This is a barrier I cannot cross. It is a barrier to entry. If such a limitation exists, do not lament it. Accept your nature and move on.
However, even in those cases, Skill can defeat natural talent.
For you see, the natural talent usual has the problem that it is TOO easy. When something is too easy, humans grow complacent. The truth of the matter is, any skill is a numbers game. The human mind is not one unified thing. It is a computer and you are a pilot it in. You program your mind to do things in chunks and blocks.
How do you walk? Where does every toe go? Which muscle groups do you move? What do you do when running and encountering a set of stairs?
In medieval times, Stairs to defense fortifications were often uneven and each step was deeper or shallower or longer or shorter than each other. Why? Because a guard who walked up and down those poorly constructed stairs each and every day learned how to walk those stairs without thinking. An invader, trying to climb those stairs, would stumble and fall. It gave the defender an advantage.
The natural talent often is only good inside their specific wheelhouse, whereas the one who practices day after day, and spends hour after hour working to improve, will improve. It is a math game. 100 hours to be passable. 1000 hours to get good. 10,000 hours to master. Natural talent is needed to achieve truly astounding levels of achievement, but in 10,000 hours, you will be better than any natural talent that never puts in the hard work.
Afraid of someone stealing your work?
Are you so arrogant as to assume your work is so worthy of theft? If you are to achieve greatness, you need to work. You need to put yourself out there, and you have to risk failure. And if your work is stolen, you write that off as learning, then you make something BETTER. People only fear their work being stolen if they cannot improve anything. Have you reached the height of your craft? NO?
Then decide what you want. If this is a skill you wish to master, then master it. if you just want this to be a hobby, then you should be flattered that your work is stolen, because that's the best you are ever going to be. Stolen work is just free samples. If someone is stealing your work and passing it off as their own, I promise you, they will be discovered for the frauds that they are because they will be unable to ever achieve it on their own. In the end, they will fail to produce anything.
The truth of the matter is, there is a certain percentage of your work that will be lost and used by others, no matter what you do. The trick is to constantly make something new, so that when people get used to the free samples, then you can say, "Well, if you wish more, then that will cost you." Stephen King did not start out as the best-selling author in the world. He stuck to it relentlessly.
Just don't sign any contracts without getting legal advice first.
