/ic/ - Artwork/Critique

FUCK. Something's bugging the hell out of me and I need someone else's eyes, I hope this is the right thread to post this in.

So, pic related is just something that came up sketching, nothing particularly special, but after a lot of erasing and redrawing there's still something at its core that's annoying me. And I think my eyes are not at a level where I can say it's wrong AND justify why/fix it. It's just a sketch, I could jump to something else, I'll delet this anyways, but this is literally telling me there's a weakness right under my nose. Maybe it's something with the proportions? the neck? face? something inconsistent? whatever it is, I know it's definitely the next thing I need to improve on. Which is why this sketch is slightly more important than usual.

Please /ic/ just tell me everything wrong with this picture.