Okay, so the major problem here is that your face has no shape... at all. With the head just being an oval, the features don't look as great. Face shape emphasized facial features. That's the main problem with this piece.
All with that, the eyes aren't level with each other or the same height as they should be. Eyes are halfway down the head, therefore your head is entirely too small. Spend a little more time shaping out the nose. Compared to the facial hair and eyes, the nose just looks unfinished.
All in all, the best advice I can give is this: Spend more time of your art. Focus on shaping out the face (even anime and cartoons have realistic property and follow anatomical guidelines). And, also, don't draw on notebook paper of you can avoid it; Notebook paper is very thin, so too much erasing can create holds, and is also messy-looking when scanned or photographed.