To remove the shell: Put your thumb on the underbelly of the shrimp, where the legs are attached. Release the shell with your thumb. Hold the tail while removing the shell by simply pulling it off. I don't recommend doing this until the shrimp is cooked. It would be very challenging with frozen shrimp. To remove the tail: It's really easy to remove the tail! Pinch the tail at the bottom, where it connects with the shrimp’s body. Pull it. The tail should come off easily.