Having set a schema with its respective fields in place, you only need to select the values for your still empty fields. Simply click the cog icon on any of your widgets and the following screen will appear:
Click Edit to unlock your fields. Now you can select values for the Select type using a dropdown list, for the Date type using small pop-up calendars, and simply type in the values for your short and long text fields:
That's it - now your JIRA project is neatly labeled!