How to train LO to learn writing? My child is 3yrs ++.

Writing involves fine motor skills so do anything that helps him to train his finger control. Dough play, painting with brushes, threading, colouring with chunky crayons. To start off with tracing, you can get him to draw in sand too. Frm there once he can grip better then can move on to tracing dotted lines. Lots of praise and encouragement needed too!!