How do you impress a girl when your very very shy?

I loved someone but I'm new at a school and want to impress her so I stashed a note(inside the note was a little bit of jewelery) in her desk and I said from: Secret Admirer and I played dumb when she asked me about who I thought wrote the letter(note: I didn't lie) So How do I impress a girl when I'm very very shy?

well complent her or something trust me!