At the band recital when Pim has Debbie holding the last note of the song for a long time, Debbie's right hand is in the air with a pink handkerchief in it. The note ends and you see Debbie from a little farther away and both hands are by her side, with the handkerchief in her left hand.
When Phil meets Marla, a pink book is on top of the pile in her hands, then the camera goes to Phil and back to Marla and the pink book is third from the top of the stack.