Street-Style Steak and Shrimp Tacos

Ingredients
For the Steak:

1 lb skirt or flank steak
2 tbsp olive oil
1 tsp salt
1/2 tsp black pepper
1/2 tsp chili powder
1/2 tsp garlic powder
1/4 tsp cumin
For the Shrimp:

12 large shrimp, peeled and deveined
1 tbsp olive oil
1/4 tsp paprika
1/4 tsp garlic powder
Pinch of salt and pepper
Other Ingredients: