When I first started writing, years ago, I didn't have a clue as to everything that was involved in writing. However, in my defense, things have changed quite a bit since then.
The up and coming movement in writing seems to be indie authoring. So, for a children's author, such as myself, it means many more things fall on the author to get accomplished for before publication takes place. Indie authors make sure that their books are illustrated, their covers are created, and their manuscripts are edited and formatted.
That is one of the reasons I have been practicing. I want to be able to illustrate more of my stories. I also hope to use some of my illustrations for some of my educational adventures!