I can't believe how ugly I really am. I hate everything about myself
Don't say that about yourself. Why do you hate the way you look so much?
I wish I could change my face, I don't want it
I'm sorry to hear that, but I believe it's good to try and start thinking more positively about yourself. Slowly changing your wardrobe, getting a haircut, and changing posture can do wonders.
I don't know how to make my face look better, so I can feel good about myself.
Have you tried using makeup. There are tutorials online that can teach you how to use a small amount to enhance your good features. It can be a great boost to your self esteem when you see what makeup can do.