If you'd like to rename, modify, preview or delete your Edit Style, firstly, make sure you're in the Projects home screen, you can navigate here by clicking on the Narrative logo in the top left:

Now click on the Styles tab on the left hand navigation bar. On the Styles home screen, you will see all the different Edit Styles we have, including your own Personal Styles.

If you want to rename, modify, preview or delete your Personal Style, right click your Style, then click what you'd like to do in the popup:

If you want to learn more about modifying and improving your Personal Style, click here.