Very nice art!

Here is what I envision next :

Applejack removes the snow from herself and gives Twilight a grin. She then runs after the unicorn, both of them giggling, and catching up, she jumps on her friend. The two roll in the snow, now laughing out loud. The stronger earth pony ends up standing above Twilight, who's lying on her back, and the two friends look at each other, bursting into laughter.