Creating Shrimp Boil Foil Packets is straightforward when you follow these clear steps:

1. Preheat Oven/Grill: Preheat your oven to 400°F (200°C) or prepare your grill.
2. Cut Foil: Tear off large sheets of heavy-duty aluminum foil. Each packet should be about 12-14 inches long.
3. Prepare Ingredients: In a large mixing bowl, combine shrimp, sausage, potatoes, and corn.
4. Season: Drizzle with olive oil, then sprinkle in Old Bay seasoning, garlic powder, paprika, salt, and pepper. Toss everything until evenly coated.
5. Assemble Packets: Place an equal amount of the mixture in the center of each foil sheet.
6. Seal Packets: Fold the sides of the foil up and over the mixture, sealing them tightly to prevent steam from escaping.
7. Cooking: Place the foil packets on a baking sheet or directly on the grill. Cook for 25-30 minutes, or until shrimp are pink and vegetables are tender.
8. Careful Unfolding: Remove packets from heat. Open carefully to avoid steam, and check for doneness.
9. Garnish: Sprinkle with fresh parsley for added color and flavor.
10. Serve: Place lemon wedges on the side for squeezing over the meal.

Following these steps will help you achieve perfectly cooked Shrimp Boil Foil Packets that are packed with flavors your guests will love.