First off, the photo is great! You're going to look great someday. You have like a real soft face that estrogen will only build upon.
Next, I'm a bit older than you, at 21 (that's me at left; see, it IS possible), but reading this reminded me a bit of me not only now, but back when I was your age, very much so. Above all else, give me one wish, it would absolutely be a totally female body...but thankfully you WILL get that. Not at birth sadly, no, but it WILL happen.
I made it through where you've been. And I trust that you can as well. Does it mean it will be easy? I can't truly answer that one for you, but for your sake I hope it is. Having been down this road, I suggest the following:
First and foremost, medical care. For someone feeling as down as you do about your body, a therapist or doctor, as was earlier suggested, is honestly a good thing. You do want someone well informed for not only future hormonal progress, for your mental sanity overall. I can't stress this enough. Seeing the wrong people will get you nowhere except more discouraged, distressed, and angry, all at the same time. I know this all too well, sadly.
Then, next of important, as Northern Jane says, is baby steps. Shave your legs (which you state you don't do--this will help a little bit), start growing out your hair. I noticed you want breast growth. I used my own method for coping with this that I hope works for you; and while it's not perfect, it helps your self-reflection in the mirror. To do so: stick a pair of rolled up socks under your shirt, with your own time (since they have a good chance of rolling out). The shape you get in your shirt, when you look in the mirror is pretty similar to that of breast buds.
I know how you feel about wanting this above everything else in the world. I really can relate, that struck a chord with me. That and the over 18 business-be careful with doctors on that, too. They're worried about consent laws. If you get someone like that, I'd be a bit concerned.
You should at least ask about blockers, as of right now, though, to family, to the doctor, etc. as something of a compromise. It prevents your further masculinization, and they are fully reversible, from the perspective of your parents.
You want romance, but only as the girlfriend? I do too, like a lot. That will come with time. It won't be immediate, but I am positive it will happen. Same applies with the body down there. I hate it beyond words, but what about thinking of the positive? Think of how nice it will be when you have a vagina instead? When you look down, and, in fact, you are happy!
Last, but not least...you need to be living to be the female you are within.
Sure, you might not have the cute skirt, the blossoming breasts, just yet. But a woman is much more than her clothes and breasts--she is who she is by her movements, her language, her warmth, her understanding. Let her (yourself) shine, in as many ways as you can. Be you--why put on an act? Dr. Seuss once said: "Today you are you, there is no-one alive that is youer than you." If you get told that you're acting girly, why stop? That's who you are after all, right? If you get asked, just say you're being yourself, which is much better than the alternative, right? Just think about the motivational poster: "WE CAN DO IT!"
Be safe, be strong, be you. If nothing else, I believe in you. It personally pains me to see stories like yours, because of that level of emotional distress, bodily hate that I know first hand.
*hugs*
As an aside, just so you know...if ever have questions, comments, concerns, or anything, PM me once you get 15 posts (the minimum necessary). I'm more than happy to discuss life with you. Alternatively, there's the site chat, which I personally find very useful for support when need be. I'm usually there, too, every night, if you need a shoulder.
