In a large bowl, combine shrimp with chili powder, salt, and black pepper. Toss to coat evenly. Let sit for 5 minutes to absorb flavors, enhancing the shrimp's natural sweetness.

Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add shrimp in a single layer. Cook for 2-3 minutes per side until pink and opaque, creating a slight sizzle.

After removing the shrimp from the skillet, set them aside on a plate. Pour the remaining olive oil into the skillet, heating it over medium heat. Swirl the oil around to ensure the entire surface is coated. This step is crucial to prevent the slaw from sticking as it cooks, allowing for even cooking and optimal texture.

Place the slaw mix into the preheated skillet over medium-high heat. Stir continuously for 2-3 minutes, allowing the slaw to soften slightly while maintaining its crunch. You should notice a fresh, earthy aroma as the slaw begins to wilt. Ensure it retains a vibrant color and does not become overly soft.

In a small bowl, combine lime juice and sour cream, stirring until the mixture is smooth and well-blended. The resulting lime crema should have a tangy, creamy consistency, making it ideal for drizzling over the tacos to enhance their flavor and texture.

Place corn tortillas in a dry skillet set over medium heat. Toast each side for approximately 30 seconds until they become warm and slightly golden. This process enhances their natural flavor and ensures they are soft and flexible, making them easier to fold without cracking.

To assemble the tacos, start by placing a few cooked shrimp onto each warm corn tortilla. Ensure the shrimp are evenly distributed for balanced flavor. Add a generous spoonful of slaw mix on top, providing a refreshing crunch that complements the tender texture of the shrimp. Serve immediately for best results.

Generously drizzle the lime crema over the top of the assembled tacos, ensuring even coverage. This tangy, creamy addition enhances the overall taste profile, bringing together the various elements of the dish. The smooth texture of the crema complements the other ingredients, providing a refreshing contrast to the seasoned shrimp and crunchy slaw.

Sprinkle freshly chopped cilantro over the assembled tacos to add a vibrant, herbal aroma and a touch of green. Arrange lime wedges on the side of the plate, allowing diners to squeeze them over the tacos for a burst of citrus flavor that enhances the dish's overall freshness.

Immediately serve the shrimp tacos, ensuring the shrimp are warm and nestled in the soft corn tortillas. The contrast between the warm shrimp and the cool slaw mix and sour cream creates a pleasing texture. The combination of temperatures and textures enhances the overall eating experience, making each bite satisfying.