Welcome!
Quick look in the garage show about four active Festivas. Looks like your mileage is in same neighborhood as the others, great start. South Florida? Sure make it easier to get better mileage not fighting that snow or cold weather. What is your commute like highway, city or combination. Take a look at the
100+ Hypermiling / ecodriving tips & tactics for better mpg - EcoModder.com if you haven't.
Remember to add your car to the garage.