I think you did well carrying the idea of your character!
The knife and the hand parts are extremely well done, especially the upper chest area having enough width and space to place the shoulders with. I think the neck is a bit long, and I know the stomach is shortened because the pelvis is just wayyyyy to small in this case. The legs coming off of it are too close together from where they start from the hips, and the feet are spread a bit unnaturally.
REALLY GOD DANG GOOD ANATOMY ATTEMPT THOUGH SERENE
I BELIEVE IN YOU !!! T.T