@duerer I see you’re sculpting in orthographic view. I recommend not sculpting (or modeling in general) in that view as it drastically distorts ones perspective of the object. In the case of this shark and orthographic view will never look like artwork proportionally.
I should say that some artists do like to sculpt/model in orthographic. Ortho has specific uses for sure, but mostly it’s preference. And all I can say is…no one is perfect 😜
