Caricature Drawing

I am learning how to make caricature drawings. This is my first trial.
I hope to get better in subsequent one.

The model I use is a close friend and a fellow hiver @morentis. I gave him comb hairs, big nose and tiny neck while still maintaining his smile.

The sketch was done with an AutoDesk sketchbook application and aided with an S-pen. Below are my steps:

Thank you.