Broken Skull - Digital Drawing

Hi all!

Here is my new digital artwork. Today, I tried to delve into drawing something different from a portrait and animal. It's really been a long time I drew a skull.

This time, I drew a half human skull with broken parts and hollows. You can see it lying a ground. I made the base very dark as well as creating a negative space on its background which enables the skull to stand out.

The drawing was done with AutoDesk sketchbook application and I used scribble style to build my forms. My steps are below:

Thank you.