Though this work has been done to learn Maya, it could not have happened without Zbrush.
a bit more information on this topic as well as my other works can be found here, in my Artsation profile:
https://www.artstation.com/artwork/v24YmE
here I would like to express my gratitude to Zbrush: thank you , guys, for changing the world to better - I cannot stop admiring Zbrush functionality.
Hope to see more from you!