how tf does one make text shaky???

Thank you all
Call me Freya (any feminine pet names are also acceptable)
18
Transfem
Pansexual
Subby catgirlthing
Autism&adhd (sry if i don't respond im not ignoring you i just don't know how to talk to people (plz tell me if im being weird or too much):3)
how tf does one make text shaky???