In trying to draw Harris I struggled with drawing catlike teeth, especially when a person with catlike teeth was grinning.
Trying to draw a grinning person with catllike teeth didn't start with Harris. I had the same issue with Ray Valentine, who fortunately rarely grinned
Alazar and Luciente were created through my attempts to draw Ray smiling.
to try to learn to draw cat-like teeth I found a photo of a cat skull and tried to draw a human face around it.[as you can see this was during my Van Kleiss obsession]
I took a photo of my son grinning and tried changing his teeth to catlike teeth
another of the Neil and cat skull project, I tried to make this one not look like Neil