Sex Performance Anxiety

Does anyone Else get performance anxiety when they're on top? My bf likes to switch to cowgirl position after missionary and I feel so insecure. Like if I'm not doing it right. Specially bc I like to rock front to back instead of up and down. He also never moans. Ever. So idk how he's liking it. He also likes to watch me during BJs but I get insecure and embarrassed uwhen I know he's watching. What do I do?