Art made by ChainChomp2

When Comet Tail was in magic kindergarten, he had feelings for a certain purple unicorn about his age. And that would lead to him trying to impress her with his magical abilities... only for them to backfire on him.
Then after hearing of young Twilight being taken up as Celestia's Pupil, Comet outright comes to the conclusion that he undoubtedly really needs to improve his magic.

To impress Twilight of course.