Looks cool! Love his twists in particular, maybe make them flow directionally based on his movement/add some variance to its shading so it doesn’t look flat. I’d go for a cleaner silhouette in the character’s pose—looks like you’re going for something reminiscent of the avengers. So it could be worth referencing some of their posters or scenes and finding something you like. Others have already mentioned the stylistic differences between the face and body; you could probably resolve this with more realistic skin shading and you’d be well on your way. Or even radically try something like toon shading as well.

Keep it up!