What will happen to me?

Alright, so I have math with this girl named Winter who isn't really the nicest person in the world. Today I finished my math early, and I had alot of notebook paper. Since she calls me Asian because of my squinty eyes when I smile, I wanted to make a small joke about her. So I drew her in a princess gown, holding a magic wand with the title ''Princess Winter Sparklypoo The Great!'' in big letters. Sooner or later, a girl named Kaylee snatches the note out of my hands and hands it to Winter. Since me and her have a ''friendly'' rivalry, I hoped she would take it as a joke. But later in Science, she whispered in my ear that she is telling the principal of the school tommorow. I really dont like getting in trouble, but now im petrified in fear. She said she has the picture to prove, but she isnt much of a trustworthy person, so im scared that she will go and add to the picture... So, What will happen? What should I do if she adds some details to it?? Thank you!