Final answer:
Camilla and Jake should seek immediate medical attention after applying the tourniquet to ensure there are no internal bleeding or complications.
Step-by-step explanation:
The next best action for Camilla and Jake after applying the tourniquet is to seek immediate medical attention. While the bleeding has stopped, it is essential to have a healthcare professional assess their injuries to ensure that there are no internal bleeding or complications. Internal hemorrhage can be life-threatening, and it is crucial to have it checked by a doctor. They should move quickly to a hospital or call emergency services for assistance.