Dear Twilight,
This report is adorable to read, if only for the sheer naivete that children bring to the world. While I'd love to believe that everypony can find their talent and put it to use and live a happy life doing just their calling, the facts don't lie when I say that some of those talents hardly mean a thing to others in the world.
Twilight, understand that there are some ponies out there that have to make a living by some other means because their true talent may not be enough to get them by. Your local florist may be a cabaret singer, or your barber a doctor. Heck, Applequack might be a moonshiner in the off-season for her orchard.
Or at least Granny is. I don't know what she does to get that sour bite in her cider, but I love it.
Anyway, Hidden Mark talents are the unsung heroes to these ponies, Twilight. While discovering your true calling is important, it's just as important to figure out how to support that calling if you know it can't support itself.
I should tell Luna about that. Her... erm, aspirations regarding singing could use this pep talk too.
Sleep well, my student. And keep on top of those library late fees!
Love,
Princess Celestia
Evening, Lu--that better not be a microphone.
No, I'm not going to participate in Karaoke tonight. I hear everyone brings earmuffs to that anyway and...
No, Luna! Your voice isn't THAT terrible... although you do need work. A ton of work. Mountains of it, actually.
I don't know, maybe try to not shout or yell as much? Practice softly in front of a songbird? Get lessons from Fluttershy? Try something!