What+makes+a+good+writer

Being a great writer is not some inate quality that we are naturally born with. Or is it? What makes a writer great?

The basis for all writing is language itself, so a good grasp on vocabulary (or, at least the knowledge of how to use a thesaurus) would most likely be the basis of good writing. Know how to structure a sentence would be a good idea. I'll add more later on.