How do i become friends and start talking to this guy in my math class?

For context i’m in high school and basically there’s this guy in my math class and I just recently started liking him.

I’ve caught him looking at me several times and we play eye tag a lot and also we only have math together this year, but we used to have band last year and a summer math class.

I never even noticed him in band but i just started noticing him…

I’ve started to initiate conversations every time after a test and ask him what score he got and sometimes we walk tgt for a bit and today we had a quiz and I asked him about his score and we walked a lot more than we usually do and he asked follow up questions when we were talking but idk

I want to know how to REALLY befriend him yk, like get a form of communication or something idk pls help