what is the perfect age of a kid ,we can start giving Training how to hold pencil and writing???

A. From the age of four years slowly the child is going to learn but right now if you would want to practice the good thing is to take a sheet and give a tripod crayon to the child and let your child’s Ribble freely if you want to encourage your child start doing the activity with your child because when you will do it your child would rather be more interested in doing that and that’s how slowly you can teach your child to hold a pencil initially in a very random manner but slowly once a child learns it better they would learn to hold better over the period