How to impress a guy you see first time IRL after chatting online?

I used a dating app, matched with this guy, we texted for a week and then he suggested meeting in real life - IRL. So we met in a nice coffe shop, I was quite nervous, but then I thought that the conversation was going good. But after that he stopped texting me. I know that it could be any reason for that but in general I think that I give not a good first impression. How to change that? Any tips for first IRL date?
How to impress a guy you see first time IRL after chatting online?
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