The importance of using all these in building with the tools that I’m showing is so things are organized. You have layers that have what they are on them so that anyone can tell what it is. Pantone and other personal colors are shown that are being used in the document. It’s best to delete all extra colors when packaging so it is simplified and easy to navigate. Having styles corrected so that they do what they are suppose to do to make them function. The nice thing about styles is that they can be reused and if done correct they should be able to do it in one click.