I'm so glad you like it and that you can see it as a sort of tutorial in drawing/sketching. I always mean to record my screen when doing things, but haven't figured out how to do so, thus I am glad that you found instruction just in see this partial sketch.

This is also why I always tell myself that my studies for paintings (Which are often pen/watercolour or ink/watercolour) are in themselves also finished pieces, even though I use them as a stepping stone to a larger more finished work. And sometimes the quickness and freedom one gives a sketch opens up new movement or painterly action in an artists approach to more finished pieces and this is, I think anyway, how an artist grows their style. I'm glad you liked it.