When Magic and Mainia Meet at a Mare

Twilight Sparkle is very excited for her entrance exam. Nothing could possibly go wrong... right?

Twilight is ecstatic: it's finally the day of the entrance exam for Princess Celestia's School for Gifted Unicorns.
She's studied.
She's practiced.
She's prepared.
There is absolutely NOTHING that could ruin this day! Well... almost nothing.