It was a normal night in the human version of Equestria (Gag, I'm gonna try & speed-up the narration for us to get out of this world & to the good pony world as fast as I can!). What's this? A young lady walking across the streets at night with a few bulging bags of stuff. She tiptoed her way to a statue of a horse. This statue has a special characteristic to it actually. After every 30 moons, you can walk into the pedestal of the statue & enter another world, but in a different form!
"(Okay Sunset Shimmer, time to return home, you've finally graduated College, I think that it's about time that you returned to your true home.)"
So, she enters the pedestal a human, but when she exited the other side, she came-out through a mirror & transformed into a unicorn. Sunset Shimmer snuck past every guard in order to escape the castle. She galloped through the streets to a Crystal Empire hotel building, she decided to have her important plan for forgiveness tomorrow, for the mane 6, Spike and the princesses of the sun & moon would be there tomorrow.
"I gotta have them forgive me for my wrong doings, especially Twilight Sparkle." She said to herself.
End of prologue.
A tip:
For thoughts: use single quotes.
'I think, therefor I am.'
"But now I am speaking aloud"
Found a typo,
You're missing an "r" in "Equestria", including the Author's Note.
By the second sentence, I already see I should enjoy it like 'Spiderses'.
I see it seems to be your style