Learning to draw on Pen Up and teaching it to the boys

Been slowly trying to improve my drawing on the phone while using it as a way to relax.

I particularly love Pen Ups feature where you watch someone draw and you follow along by tracing over their drawing. It's a perfect "learn by doing" approach. 

After following a few of these "live drawings" I'm starting to get a hang of how various brushes are used. This drawing above is my first drawings in Pen Up using "Live Drawing".

Over the years I've been showing the boys how to use Sketchbook and lately Pen Up. These are the boys first drawings on Pen Up - learning to use the oil brush.

Here's a drawing I did by myself using the techniques I picked up following Pen Up examples:

For this I've before I had an imagine in the side and tried to recreate it using circles: