In a medium sized bowl add the shrimp and cajun seasoning. Toss until coated. In a medium sized skillet over medium high heat add olive oil and shrimp. Cook for about 4-5 minutes.

Add the tomatoes, corn, black beans, red onion, avocado, half your jalapeno and cilantro to a bowl. Salt and pepper to taste.

Combine sour cream, water, 3/4 of your cilantro, your lime - juiced and zest, other half of jalapeno, a tsp of Cajun seasoning in a blender or immersion blend. Blend until smooth.

Assemble the tacos dividing the avocado salsa and feta with shrimp, then drizzle your dressing garnish with Cilantro and serve.