In my opinion, a skilled content creator is somebody who knows how to evoke emotion and spark an idea in his readers. A good writer makes the recipients of his work see things from a brand new angle.
A university degree or a certificate can definitely help one to become a better writer. Many universities and other institutions teach their students to write compelling, unique and creative pieces of text.
While writing for money can motivate somebody to become a better author, one shouldn’t compose texts just for the pay cheque. If content creation is truly one’s passion, he will not care whether he is remunerated for writing or not.
Ability to research is another essential trait in a writer. Once somebody knows how to gather information on any topic, he will never have problems communicating ideas in a form that coherent and valuable to the reader.