I walked over to the warden's office and knocked on the door "permission to enter ma'am."
"Permission granted," said Spitfire. I walked in confidently, "Rainbow Dash, I have heard that you have not once, not twice, but three times performed a mythical Sonic Rainboom, is that true," she said?
"Yes that is true ma'am but I don-"
"So do you think you can perform one for me right now," she said.
"I would but I can'-"
"Good I'll be wanting to see it in at most three days"
"Okay but I d-"
"You are now excused," she said. I walked out noticing a picture of a little filly with a orange and yellow mane this filly also had a yellow coat. The filly in the picture was young and sneaking into the warden of the wonder bolts office to show the warden what she's got. Then I realized that that filly was... Spitfire!
When I exited the room I realized that I couldn't do a sonic rainboom, I just sprained my wing. I'm going to have to practice and especially recover. I only have three days. Then I realized ever since I got to the wonder bolt academy I have not been confident. I've been doubting myself the hole time I mean I'm probably the best flyer in Equestria besides maybe Spitfire and Thunder Dust. I can do this.
I started practicing immediately, to my surprise, I got it on my second try. I love it when all that wind is brushing against my mane and coat, all the speed, oh I love the speed, but most of all is when my mane turns into a rainbow and I create this beam of rainbow colored awesomeness.
When I was done I went back into my dorm with sweat dripping down from my mane. But when I walked in, there was a surprise. "hey Rainbow Dash".
This story is so awesome
ma'am? *
is that true? *
Spitfire was present one of those three times.
mane. This filly*
She was sneaking into* (You already mention she is little/young)
The reveal that it is Spitfire is pretty unnecessary, especially since Rainbow Dash has seen Spitfire without the Wonderbolts outfit on.
I'm pretty sure Sonic Rainboom, as a title move, is capitalized. I am unsure of this.
Wonderbolt Academy*
whole time. I mean, I'm*
Equestria, besides*
Still named Lightning Dust, not Thunder Dust. This really disappoints me, since you link the video in the very first chapter.
I don't know that the description of the Rainboom is done well, nor do I think it's in-character, how it's described.