Run a lime wedge around the rim of your margarita glasses
Then, place kosher salt on a small plate a little larger than the diameter of your margarita glass.
Dip the margarita glass in the salt, rolling it until the lime juice catches the salt.
Put a few ice cubes in each glass and set aside.
Juice blood oranges and limes to get enough juice for your cocktail. Use a strainer to remove any seeds.
Fill your cocktail shaker up with ice. Then, add tequila, blood orange juice, lime juice, agave and vanilla to your cocktail shaker.
Shake vigorously for 10-15 seconds and pour into salt-rimmed glasses.
Garnish with additional sliced blood oranges if desired.