Pour all the necessary ingredients into the blender. Like how you would do a standard margarita. Then put in the ice blend it all up until it becomes that perfect slosh. Pour it out into a margarita glass or a Libby's Cactus margarita glass preferably and garnish it with a bunch of black berry(say 3or 4 pieces) on a clean metal poker on the side and to finish it...put a sprig of mint leave on top.
Serve in a Coupette Glass