I have a friend crush on this girl in 4 of my classes, and I don't know what to do

So basically a friend crush is when you REALLY want to be friends with someone, I'll call my friend crush E, I've had a friend crush on E since late September or early October. I made two paintings for her and I used a fake name for the paintings, when she got the second one, she found out it was me. I put a note on her desk explaining, but she just talks with her friends, we don't really talk and I'm too shy to talk to her.