Although Professor Helmerson considers that the student has played well and correctly, he misses more expressiveness: character could be intimate, but without losing in expression or sound.
Additionally, the professor comments some musical issues about the cantabile character, rhythm and energy, or dynamics. He also suggests the student to play last note to the frog, so that he gets a better ending of the sound.
Finally, Helmerson advises him to play this Largo avoiding thinking in numbers of bars, but trying to convey feelings.