Sundance’s competition, where films like “Whiplash,” “The Birth of a Nation” and “Blackfish” were first seen, can be a little solemn. Not so with Mr. Jasper’s entry, a comedic drama about a New Jersey woman named Patricia Dombrowski, a.k.a. Killa P, a.k.a. Patti Cake$. She’s “a big girl with big dreams of rap superstardom,” according to Sundance materials. The Australian actress Danielle Macdonald plays the lead. Mr. Jasper has never directed a feature film before, but he is well-known on the music video circuit, having directed videos for acts like Florence and the Machine.