Yeah, I'm from Texas too and have lived here almost my whole life. I still missed Abilene, Lubbock, Odessa, and Amarillo. (And Laredo, but missing that one is so shameful to me that I'm keeping it a secret.)
Want a harder one with more cities and no map? Check out jetpunk.com/user-quizzes/224097/largest-cities-in-texas and try to do them in order – they're sorted by population!
A=above/Amarillo
L=lower/Lubbock