OP, don't analyse so much. Your text was OK, not sending a text was OK too. These are really inoffensive actions and you can't control the situation, or any situation for that matter. Nothing you said or didn;t say could change that, you are who you are and you cannot change your nuances based on people's preference (or assumed preference).
That said, I do agree, try to cut your first date off at around 1-1.5 hr max, give yourselves a chance to step back and think. If you like each other, there would be a second date to talk more. And don't get drunk.
And from my own dating experience years ago, there was someone who told me to text shen I got home, just to brush me off teh next day. Some men get ego strokes from knowing that you were interested.
You sound very young by the way. Don't be discouraged, keep going for it, and remember there is no "rejection" as such so just meet many people and don;t get overinvested.