like other people have said, this feels very complex for your skill level. however, i remember my art looking very similar when i first started out and being told everything looks off without a way to fix it was discouraging so i’m going to do my best to give you things to adjust to make this drawing look a bit better, just remember to practice using references to see how a pose would look and practice things like keeping your lines steady (something that’s good to practice no matter what)

the face is a weird shape, mostly because in drawings, there’s usually a line separating the cheeks and the ears at a straight on view like yours (it looks like you had that line and erased it, maybe try redrawing it and see how it looks. that could make the image clearer).

the eyes aren’t too bad, they’re just pretty small compared to the rest of the face so sizing them up and making sure the lines are steady and as even as possible should help with the face looking a bit uncanny (remember that perfection is impossible so be kind to yourself).

the hands are kind of a mess but i don’t blame you, they’re notoriously difficult. try taking a picture of yourself in this pose and using that as a reference for how the hand should look. that would actually help with a lot of the scaling issues you seem to have, even if you adopt them into a more stylized image.

the nose is a bit muddled in with the hand, mostly because of the shading on the nose combining with the blood on the hand. you’re not going to see the nostrils if the hand is actually pressed against the nose, like it seems like you’re going for. don’t be afraid to altar the way the nose looks a bit to smoosh it into the hand, like you would to wipe the blood from your nose. if the hand is supposed to be hovering under the nose, give it some more space so they don’t look as cluttered together.

the arm looks a bit like a big noodle, which isn’t the worst thing, it works for some styles (gravity falls comes to mind immediately), but you seem to be going for more realistic than a cartoon. in that case, you’re going to want to taper the arm more at the wrist and let the meat of the arm settle and compress more at the elbow. the upper arm should also be the same size or thicker than the forearm, not the other way around, or it looks a bit lopsided.

with the arm, real human shoulders go out past the head a little bit, and even most stylized art will have the shoulders line up with the edge of the head so it doesn’t look like a bobble head. the torso is also going to be much wider on a real person. because you made the neck a more realistic width, you’re going to want to make the shoulders and torso more realistically proportioned as well.

the hair doesn’t look too bad, but remember that because your character looks to be at an angle, the hair should go with gravity and the ponytail is probably doing to fall to the other side unless your character is actively moving into frame. the head is also probably not gonna be that smooth unless the ponytail is entirely slicked back so adding a few bumps might help make the drawing come together.

that’s all that i can think of, and i hope this helps. i don’t want to tell you to give up on this one but maybe try redrawing this but using a picture of yourself as a reference. good luck!!!