Measure tequila in jigger and then pour into shaker.
Measure Grand Marnier in jigger and then pour into shaker.
Measure blood orange syrup and then pour into shaker.
Measure simple syrup and then pour into shaker.
Cut a lime slice, cut a slit and add to glass rim as a garnish.
Cut each lime in half and then juice all three over shaker.
Add ice to shaker.
Add lid to shaker and then shake.
Remove lid and pour into glass.
Enjoy!