Well first off, you're being WAY too hard on yourself - you are a very pretty young lady. BUT SECONDLY AND MORE IMPORTANTLY... please don't make the mistake of thinking exterior perfection is the most important thing for self worth - it's not by a long shot... in fact it's WAY down the list for everyone but the most shallow people... despite what the media, and makup people, etc. want you to believe. As you grow older you will see that this is true.
Also, I personally don't think being super-pretty at a young age is even a good thing. Often girls like that NEVER develop much of a personality or worth ethic. They are one-dimensional and rely on their looks for everything... which makes them DULL to everyone but the most shallow guys. And when their looks start to fade, it's not a pretty sight.
So don't worry about it so much - work on being a kind, intelligent person with lots of interests and you will grow up into a very attractive women all around. Trust me.
Also, I personally don't think being super-pretty at a young age is even a good thing. Often girls like that NEVER develop much of a personality or worth ethic. They are one-dimensional and rely on their looks for everything... which makes them DULL to everyone but the most shallow guys. And when their looks start to fade, it's not a pretty sight.
So don't worry about it so much - work on being a kind, intelligent person with lots of interests and you will grow up into a very attractive women all around. Trust me.