In medium bowl, combine prawns, taco seasoning mix, garlic and 2 tablespoons of the lime juice; toss to coat.
Heat cooking oil in large skillet over medium-high heat until hot. Add prawn mixture; cook and stir 2-4 minutes or until prawns turn pink. Remove prawns from skillet and set aside. Cook remaining juices
in skillet for 3 to 4 minutes or until thickened, stirring occasionally. Return prawns to skillet, stir to coat, and remove from heat.
In small bowl, toss avocado with remaining lime juice. Scoop a spoonful of the prawn mixture onto each tortilla. Top with cheese, lettuce, tomato, avocado, and salsa.