You have made some notes, read some writing books, and done some research. Mostly what you've done is talk about writing a book. An idea for a book is not a book; it is a waste of time. There is no singular thing that makes someone a writer, but there is one thing that makes someone a joke--talking about writing a book without doing any work.
Pat Walsh, 78 Reasons Why Your Book May Never Be Published and 14 Reasons Why It Just Might
publishing, writing