Well, here's me to start off with. I had to do the idiotic mirror shot thing so you could see at least most of me.
I'd imagine the female version of me would likely have my same face, just with more 'feminine' eyes, and without the facial hair. She'd obviously have a higher-pitched voice (that's a given). I'm consistently renowned for having grown facial hair at a young age, so... what's the equivalent of facial hair for females? No idea. As far as figure goes, I wouldn't look extremely too much different. I'd just have decently small... well... I don't really want to use any of the words on ZD, but you get what I'm saying. I say decently small because I'm only 14, and because I don't have the most masculent of figures, so a female version of me wouldn't have a very woman-like figure, if you see what I'm saying.
As far as personality goes, I'd be essentially the same. If I didn't tell someone what gender I was, and they couldn't see me, but they knew all about my personality, they likely wouldn't be able to tell which I was. Put simply, I don't fall under any of the male stereotypes, and definitely none of the female stereotypes. I'm just kinda... in between, in a sense.
If I were to meet my other self, I'd definitely be attracted to her personality (because we share every trait), and (while this may be an awkward thought) her physical appearance. We'd be at least (most likely more than) friends, and we'd probably meet each other through ZD, in notice of a similar musical taste (since music is one of the most important things to me). We'd also notice we were both musicians, so we'd be in a band together, most likely with her on vocals, because I have a decent voice, but I really like the sound of female vocals.