Punch them in the face
You can firmly but politely say, "Please stop touching me, it makes me uncomfortable." It's important to set clear boundaries and communicate your preferences assertively. If the behavior continues, don't hesitate to seek help or report it to someone in authority.
If you don't want the other person to touch you like that, tell him/her to stop. And if he/she doesn't stop, you have to tell an adult that someone is touching you in a way you don't like.
Knighting
In the context of witchcraft, touching someone's shoulder can symbolize a transfer of energy, intention, or protection. It may be used as a way to connect with the individual spiritually or to invoke a blessing or spell. Additionally, the shoulder is often seen as a point of support and strength, making it a potent area for spiritual interaction. However, the specific meaning can vary based on the practitioner's beliefs and the context of the ritual.
Then your shawl is about the right size.
Tell them Stop! and mean it
Stop touching it so it can heal.
Tell him to stop or you should tell someone such as your parents or teacher as this is wrong.
The same way you stop touching anything else. make no physical contact.
a chip
Ask them politely.
Always get consent before touching someone.