Years ago, as a student pilot, I remember the fear when my instructor told me we would be flying into Class B (then known as a TCA). What happens if I miss a call? What happens if I blow an altitude, or screw up a heading? He kept re-assuring me that I would do just fine. But I wasn't convinced.
This is a companion discussion topic for the original entry at https://www.avweb.com/features/shortfinal/short-final-741