Welcome to my sketchbook!

I started keeping a sketchbook of whimsical girls  around August of last year.  I'd bring my sketchbook, pencils and other supplies to have something to do while my daughter was at her dance class.  When she was switched into a higher level class on a different day and time, I stopped doing it for a while.  This was my first time since February.  I'm not aiming for perfection but improvement.

Do you have something you do a little at a time with the aim of improving your skill?