u/Hani580

This is a random Doc Ock drawing I made about a month ago. I see a lot of mistakes about it like the hands, the ends of the tentacles and some face distortions. But I don't want to change the art. I want advice on what I could improve to do better next time. (Also, I didn't just draw it from my head. I used a reference for most of the body and did the arms by head).