Demon creature sketch in Zbrush

This is something I've been working on in Zbrush since I started viewing that Introduction to anatomy course by Flippednormals. This model might not be complete but I don't care. I'll say it's just a sketch and leave it to that so I could move on.
Currently I am so tired of just existing. Maybe I should just give up as this just doesn't go anywhere. I was not born to be anything so why even try when it's not biologically possible.