I want to flirt with a Finnish guy but for several reasons I'll have to take the lead since I don't regularly interact with him. I don't want to be too aggressive or violate cultural norms. I thought going to hockey game with a sign in Finnish (no one but him speaks or reads it here) would be a semi-secret way to potentially open up communication channels. I'm new to Finnish so please help me avoid any embarrassing mistakes. Thanks in advance for your help!
Btw, I put name instead of his name.
Hei nimi Luulen, että olet komea. onnea tänä iltana.