What you need to do are primarily 3 things:

Wash your hands –

The most important thing you need to do not only during this period but at all times is to practice good hygiene by washing your hands thoroughly before & after your meals, after using the washroom, after playing with your toys & some of you might have hobbies like cooking so learn to keep your hands clean with a good wash with soap for a minimum of 20 seconds. Remember the hand wash should be thorough including cleaning your palms, nails, back of your hands between the fingers and your wrists.. this is the first step to defeat the virus and many others infections.

Cover your mouth when you sneeze or cough –

When you cough & sneeze it helps germs to spread and settle onto surfaces around you. As a superhero to prevent germs from spreading cover your cough & sneeze with a tissue or cough or sneeze into your elbow. Discard the tissue in the garbage bin & wash your hands thoroughly. This helps to prevent germs from spreading.

Support your elders –

Other than the above there is one more very important thing to do during this time and that is to be supportive of your parents or elders.  If you have been advised to stay at home, do so & help in whatever way your elders ask you to. Be it your studies, helping by doing chores assigned to you or reading to your sibling or any other support asked of you. If you miss your friends, relatives or grandparents make it a point to make calls to stay in touch, with the permission of your parents.
As you do all of the above remember a superhero needs to always be strong & healthy so you need to also ensure you exercise which can be simply in the form of walks inside your home. You also need to have a nutritious diet so ask your parents for advice on how you can exercise & what food is good to boost your immunity.