Having a completely different hand grip
Now, this is a complicated thing to describe. Instead of the normal way you hold the pencil, the way I hold mine is that 2 fingers (index and finger) hold the top and the ring and pinky hold the bottom part. It’s always been a part of my life, my preschool teachers and parents were just fine with it and some of my teachers don’t even notice it!
Here’s a pic of how I write: https://images.app.goo.gl/t5nY8fXVEswyBUVbA