Once in a weird while, a movie mimics the flaws — and charms — of its protagonist’s journey to an uncanny degree. Like high schooler Quinn Ackermann, a two-left-footer who does a crash course in dancing in order to get into her first-choice college, “Work It” often feels like it too crammed in hopes a becoming a hit. Directed by Laura Terruso and written by Alison Peck (Alicia Keys is a producer), this fairly routine dance-off outing streams on Netflix starting Aug. 7.