Dear Celestia,
I would like you to review my portion of the speech for tomorrow's event. I attempted to incorporate portions or elements of other great speeches, in addition to using my own personal style as you suggested.
Subjects, Ponies, Friends,
I, Princess Luna, and my sister, Princess Celestia, have called this conference for a very important reason. We wish to draw back the curtains and eliminate any rumors. I will address three main points.
One, I, Luna, am not Nightmare Moon. It is true that my envy once controlled me, but I have subdued that portion of me. I wish to be very clear on this point. We all have good and evil in us. You decide which rules you.
Two, the night, and symbolically, the unknown, is not to be feared or mistrusted. This is a principle of ignorance. The wish to understand and the cautious exploration of the unknown is true bravery.
Thirdly, my sister and I rule together, as one again. To solidify this trust again, Princess Celestia will perform a formal re-crowning one week from today in Canterlot.
Finally, I wish to impress upon you my great remorse for all I have done and my sincerest wish to never be feared again.
Dear Luna,
I think that this speech and coronation will go down in Equestrian history and you will be understood as truly good by anypony who harbored any doubts. Luna, I believe that, given time, all in Equestria will soon see that there is nothing to fear.
On another note, have you met anyone who has helped you significantly?
Dear Celestia,
Yes! I have met some of the kind inhabitants of Ponyville. Twilight Sparkle and Fluttershy have aided me, and their other friends have made commendable efforts. In fact, I may be spending more time in Ponyville when I am not on watch.