I was lucky enough to listen and briefly meet Jane at one of her lectures years ago in Salina, KS. She's a very impressive person. I hope to do her justice.
Here is the current state of my Dr. Jane Goodall portrait.
• HD Geometry (approximately 47 million polys)
• 4x 8k UDIMs
• Tertiary forms were created with standard Zbrush alphas and a few custom alphas I created
Feel free to try out the alphas. Happy to share!