You should take off your glasses!
Don't smile with your mouth open!
Hair covering eyes, eyebrows, nose, mouth or all of them combined? Then tie your hair!
Body is not facing the camera. So twist your body to face the camera directly.
Your angle is not letting the camera capture your neck. Show your neck!
Outdoor photography is fine but hair all of the place is not good!
Your hair color is lost! It should still be original color. GO under a shade when it's sunny outside.
We can't distinguish what is your hair and what is your background
It's important to take a close up whole upperbody shot. If you took a photo from far away, it will give us a low resolution photo.