You sound like you're splurting. One stream of air for the whole scale, only interrupting by tonguing. You also shouldn't be having to change your embouchure between F and G. If you need to that probably means both are incorrect. Don't worry about trying to hit third-space C, that will come with practice. Trying to go too high before you're supposed to can lead to both pressing and (as you seem to have pointed out) changing your embouchure as opposed to letting the air flow faster. Mess with middle C-G, doing it with one airflow, not separate airflows for each note. You make sound by buzzing, but getting a steady airflow through the instrument is just as important, as well as an appropriate embouchure.
(Learning wind instruments is pretty hard without a teacher, as you're much more likely to develop bad habits than with other types of instruments)
I've played piano on and off since I was about 5 or 6. I took lessons until I was 10 or 11, and it wasn't until I quit that I began to enjoy the instrument.
I played French Horn in Concert and Marching Band from 6th-11th grade, and also dabbled some in Trumpet. I did not enjoy being told what to play (similar to my experience in piano), but now that I've quit I don't actually own either instrument, even though I may enjoy it some now.
My love is for the acoustic guitar, though, which I started when I was about 15, teaching myself how to fingerpick by listening to my favorite folk artists. I've not had lessons (and probably never will), but I've gotten good enough to get paid to play it, I guess, so that's something.
I also am a vocalist, though never <i>a capella</i>. I need my guitar. I took a few voice lessons from my piano teacher back when I was about 10, because I loved to sing but had no sense of pitch. Basically, those lessons gave me a semblance of pitch and the rest took off from there. I love to sing, and people tell me that I have a nice voice quite often.
So yeah... I like music.