In a bowl, combine olive oil, 2 tablespoons of lime juice, chopped cilantro, minced garlic, cumin, and salt. Add the shrimp, toss to coat, and marinate for 15 minutes.
In a separate bowl, mix the diced mango, red bell pepper, red onion, and 1 tablespoon of lime juice to create the salsa.
In a small food processor, blend the avocado and sour cream until smooth to create the crema.
Heat a large skillet over medium-high heat. Cook the marinated seafood for 2 to 3 minutes per side until pink and opaque.
Lightly char the tortillas in a dry skillet or over a gas flame. Assemble by placing protein in each tortilla, topping with the fruit salsa, and drizzling with the avocado crema.