I've always had problems with how I FEEL about the way I look, since a very young age ("too tall", "too fat", "too ugly"), so I can relate with you a lot and really sympathise that you feel sad about the way you think you look.

But I do think that this is low self esteem, or whatever. I looked at your pictures too and you aren't ugly, you're very pretty (no I'm not "just being nice" it's my honest opinion and I think everyone would agree with that) ... so I don't think this is about BEING ugly, but about FEELING ugly. And as well, even if you were ugly (you're not), it's not a reason to be upset, I mean, I know it is upsetting, but lots of people who aren't beautiful in that sort of, normal beautiful way (if that makes sense) don't think badly about themselves because of it. I mean, your body, face etc is just a shell, and lots of people don't place their self worth on their outer appearance, so even if they are 'ugly', it doesn't matter to them because they aren't their appearance. Not sure if I'm making sense or not?

However you look, that's how you look, you'll look like that for the rest of your life (well except you will age)...it's much better to learn to accept that as early as possible... and maybe find other things that make you happy if your appearance doesn't. In 20 years time (or possibly much less) I can guarentee you'll look back at photos of yourself and realise how beautiful you really were and how much time you wasted worrying about not being pretty, in the end that's just wasted time.