Spending time with a cat skull

The other night I spent a good solid 8 hours drawing an painting this awesome cat skull that I found last fall while working. I decided to really dive into the process of observation and practice my skills of capturing light and shadow using ink and white acrylic paint. I was so satisfied with how everything turned out. I ended up doing 6 different versions of the skull.
Here is a process video of me doing the drawing.
https://d.tube/v/openmindopen/4vr89ko1

Here are my two favourites