If you have the passion to be a writer, you can start improving your skills by writing research paper or academic research paper for students. This will give you a chance to review many research materials while making money and you could be on your way to becoming a professional writer. Academic writing is great because there are specific guidelines to be followed meaning it is very hard to make mistakes.
Furthermore, it is easy to refer to samples fro online sites and libraries thus you can never go wrong. When writing for students you can be sure that you will be getting continuous requests therefore you can rest assured that there is a job for you everyday. If you are not yet sure that this is what you want to do, start working on it as a part time venture then you can make your final decision from there.