I'm a 10 year old girl who has encountered good and bad babysitters. Here are some pros and cons.
PROS:
Be flexible and make sure you give the kids some freedom. However, you should set boundaries for the kids and make sure to ask the parent(s) if they have any concerns or tips.
CONS:
Never scream at the kids, never scare them into doing something, and always check if they have any allergies before you feed them something.