Alright, I'll give it a go.
So, we've got the Mario Kart setup that
Guybrush20X6
described, above. As the princesses race off into the distance, we cut away to a fight elsewhere, on a Mario Kart stage, with a couple of other Nintendo royals - Bowser, and Dedede.
Suddenly, someone sends the soccer ball item hurtling into the ongoing battle - and it smacks Dedede in the face, since he's always good for a hilarious facial-expression.
The camera quickly zooms over to the off-screen newcomer, who had obviously been racing to get here: "Hi, I'm Daisy!", she cheerfully proclaims (presumably because this is a taunt), followed by an introductory tagline. You'll have to imagine one, because I can't think of a good one.
Then you've got the customary showing of moves, and the first one has to be a reference to Daisy punching Bowser skyward in the Mario Party series. It'd be fun to have all of Daisy's opponents/team-mates* be royal characters, here.
*For example, Daisy, Peach, and Rosalina could be shown in a team battle against Bowser, Bowser Jr., and K. Rool, or suchlike.
And that's about it.