What should I say to this guy I have I just messaged?

This is our convo- I messaged a random guy I had a crush on. We don’t know each other but just know OF each other.

conversation

me- hey! How’s it going

him:Hey! It’s going good, thanks for asking. How’s it doing with you?

me:It’s going good also. I came across a video of you playing the piano.. very talented!

him: you’re too kind! Thank you 🙏🏼

I don’t know what to say back or to feel like he’s not interested…

What should I say to this guy I have I just messaged?
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