In a small bowl, mix together the sour cream, lime juice, cilantro, garlic, salt, and pepper. Refrigerate until ready to serve.
In another small mixing bowl, add the shrimp, chipotle powder, chili powder, cumin powder, smoked paprika, salt and pepper. Toss to completely coat the shrimp.
Heat the olive oil in a large skillet over medium high heat until hot. Add the shrimp and cook for 3 minutes, or until the shrimp is pink and firm.
Heat the corn tortillas for 30 seconds or until lightly browned on both sides. Assemble the shrimp tacos by placing 4-6 shrimp on one tortilla and topping with the cabbage, avocado, cilantro cream sauce, and queso fresco.