Jake Owen also had a song called TOTGA on his last album
Anyways, this song is undeniably about Taylor Swift. The part about getting your picture taken to sell yourself to the world; Taylor did that when she was 11-13.
And the song has the phrase "American Girl" in it, and that song is played every night at Taylor's concert immediately before she goes onstage.
That said, the first verse doesn't really make sense to me.