Start with the fries, cut the sweet potatoes into ½ inch thick matchsticks. Place them in a large bowl and drizzle with oil, chili powder, oregano, paprika, cayenne, cumin, sea salt and pepper. Toss to coat. Preheat the oven to 425°F and bake the fries on a baking sheet for 15-20 minutes, flip the fries, and bake for another 15-20 minutes.
Tomato Salsa: combine all ingredients, season with salt and pepper.
Topping: mash the avocado with lemon juice and a pinch of sea salt and pepper. You could add the sour/cashew cream too or serve as a separate topping.
The meat: Cut the steak in thin strips. Heat a large skillet over medium-high heat and cook the onion until tender. Add the beef, garlic, paprika, cumin, chili powder, sea salt, and pepper. Cook for a few minutes, make sure the meat is still tender and juicy.
Assemble: spread the beef in the middle of a warmed tortilla. Top with the tomato salsa, mashed avocado, cashew/sour cream (optional), and sweet potato fries.