Con, I think you're lovely, and I'm sorry that you don't see or feel your beauty *yet*. That being said - I think you are in high school, right? - I'm close enough to your age that I vividly and sometimes painfully remember how ugly and awkward I was convinced I was. I hope that does not sound patronizing. Sometimes we simply aren't ready to accept ourselves as beautiful, inside or out.
What I mean is that I look at photos of my high school self and am sometimes amazed at how beautiful I was compared to how terribly insecure I felt - I spent much of my time thinking that I was just an ugly, unloveable, horrible person, and I know now that wasn't true at all. I'm willing to bet that someday, you'll have those breakthrough moments, too. Or better yet, maybe you'll go through phases now where you love yourself more and are able to realize that you are a charismatic and attractive person.
Today, if you lined me up next to my high school self and asked most people to pick the "prettier" girl, based on looks alone, I'm sure that some people would pick my high school self - she's certainly slimmer, blonde, more demure. But my present-day self is much more confident and less insecure - and frankly, cares less about people thinking I'm weird - than I was in high school, and that makes me *feel* prettier. But that doesn't come overnight, and I still have a lot of work to do on liking myself inside and out. It's taking a lot of practice, and I'm still trying to banish the negative thoughts that run through my mind. It comes and goes. Some days I like my personality or my looks or my "inner Kari" more, and other days I'd still like to switch places with my best friend.
Another change - thanks in great part to YLF, I feel like I'm able to dress myself more successfully and purposefully than I did 4 years ago. I have a better sense of the messages that my outfits *and* how I carry myself can convey a message, for better or worse, about who I am. And again, that's taken a heck of a lot of experimentation, practice, and even failures/missteps - and I'm still learning! Actually, I think we all are, really - even the pros. What I love about YouLookFab's community forum is that we are all here to learn from, encourage, inspire, and help each other through our own style journeys.
I'd also urge you to review Angie's Individual Style posts - many of which discuss individual style journeys, and I find those especially inspiring reads: http://youlookfab.com/category/individual-style/
There are a couple great links on "dressing your best" on Academichic that I loved:
http://www.academichic.com/200.....your-best/
http://www.academichic.com/cat.....your-best/
And the body image posts on AlreadyPretty, which I see a few others have linked to, are marvelously uplifting and empowering.