Dear Dad,
I had my careers interview this morning. I'm going to be I want to be an Auror, Dad. My grades are looking good enough and Mr Shacklebolt Kingsley was really REALLY impressed by the colour changing shit thing and it's going to be great, dad, really really great. I can start in September, apparently. That soon!! Providing I get the NEWTS I need, of course.
I hope I KNOW you'll be pleased for me, Daddy. I know you will.