Follow these simple steps to create your own creamy garlic shrimp pasta:

1. Cook the Pasta: Begin by cooking the fettuccine or spaghetti according to the package instructions. Drain and set aside.
2. Prepare the Shrimp: In a large skillet, heat the olive oil and butter over medium heat. Add the shrimp and season with salt, pepper, and red pepper flakes (if using). Cook for 2-3 minutes on each side until the shrimp turns pink and opaque. Remove from the skillet and set aside.
3. Sauté Garlic: In the same skillet, add the minced garlic and sauté for about 1 minute, or until fragrant. Be careful not to burn it.
4. Make the Sauce: Lower the heat and pour in the heavy cream, stirring constantly. Allow it to simmer for a couple of minutes to thicken slightly.
5. Add Cheese: Gradually stir in the grated Parmesan cheese until melted and fully combined into a creamy sauce.
6. Combine Ingredients: Return the cooked shrimp to the skillet, mixing them with the creamy sauce. Add the cooked pasta and toss everything together until well combined.
7. Add Lemon: Squeeze the juice of half a lemon over the pasta and stir to enhance the flavor.
8. Serve Immediately: Remove from heat and garnish with freshly chopped parsley for an elegant touch.

These steps will guide you to create a wonderful creamy garlic shrimp pasta dish in no time!