How to get crayon drawings off your wall?

i have a little sister who is 3 years old. she draws on our walls sometimes. i tried using mr. clean magic erasers but the paint kept coming off. how do i get drawings off my wall without the paint coming off?

Put some baking soda in a bowl, and wet a cleaning rag with water. Have it a little more than damp, but not dripping. Dip your fingers with the rag covering them into the baking soda and start rubbing the crayon marks. You shouldn’t have to rub very hard. Keep dipping the rag into the baking soda as needed. When the marks are off, take a different rag, dampen with water, and wipe off the wall. This has always worked for me, I used to clean for a friend who ran a daycare at her home, and I cleaned plenty of these. Good luck!