Place tequila and chili in a small bowl so that chil is immersed. Let sit 1 hour. Strain mixture through a fine-mesh sieve over a cup and discard solids. In a blender, pulse blackberries, orange juice, lime juice and gave nectar until smooth. Strain mixture into a pitcher and discard solids. Add tequila and stir to combine. Fill 4 rocks glasses or mason jars with ice cubes then divide mixture evenly OR to make your drink look like this one, simply pour the mixture into a prepared martini glass and serve. Garnish with additional blackberries and a chili and top with ½ ounce each orange liqueur.