Salt the rim (optional). Run a lime wedge (the juicy part) around the top rim of your serving glass. Fill a shallow bowl or plate with salt, then dip the rim until it is covered with your desired amount of salt. Set aside.
Make the margarita mix. Add tequila, Aperol, lime juice and a few ice cubes to a cocktail shaker. Cover and shake vigorously for about 10 seconds.
Serve. Fill the prepared serving glass with ice. Strain in the margarita mix, garnish with an orange or lime slice, serve and enjoy. Cheers!