here you go. I think you've approached the human body as a too simply shaped symmetrical form. While a human seen from the front indeed is quite symmetrical, from the side this isn't true at all.
You've modeled a head shape that looks good seen from the front, then made it rotationally symmetric, which messes up the profile; the head tapers down at the sides which makes sense seen from the front, but when the face tapers down it looks really uncomfortable.
My edit is super simple: I rotated the head back and gave the character a jaw. That's it, mostly!
While looking at it I noticed that the shoulder is right in the middle of the torso. That also doesn't look very comfortable.
Generally it looks like a model that was modeled to look good from the front and then the side view just sort of happened as a result making it be weirdly shaped and have things be much more symmetrical and centered than they would be in real life.
You're 5 minutes of image googling away from reference on how a human body looks in profile, so you should do that if you ever feel unsure! You'll learn in the process and eventually you won't have to look for reference as much, but definitely do do it at this point, don't be shy! Get in the habit. It's a good habit. You'd find out pretty easy that most heads don't have the forehead weighing over the rest of the face, that people generally have defined jaws and that arms don't hang from the middle of the torso.
Good luck! I love this character design. It looks ultra cute from the front, so it definitely should look as cute from the side too.
I hope this helps you out right now and in the future!
(additional note: I noticed right now, but, try to make the back connect more smoothly to the neck! there's a notch in it which IS present in many people (with bad computer posture) but i'm not sure it's intentional)
cheers kisses bye <3