Not showing Tells

[Zybomb]

I was playing in a new spot last night for the first time (old spot got raided but not while I was there at least ) Played for about 2 hours or so with mixed results. While dealing the card the dealer flipped up what would of been my 2nd hole card -- the Ace of Diamonds. I look at her sarcastically thanking her. I look at my first card (8) and the deal goes around and she gives me a new one. Its another 8. A player makes a comment from three seats away. Looks like that second card helped you huh?

Fuck.... what did I show here? How do I make sure this doesn't repeat