After receiving her wings, Rainbow Dash teaches Twilight how to use them, and race with them.

NOTICE: If someone came up with this idea, title, or storyline before hand, I apologize. I swear that I am not trying to copy anyone's idea. It's just that this idea for a story hit me when I first heard about Twilight becoming an alicorn. And now that the episode came out, I can finally write that story.