Congratulations on your first solo, nice video too, perfect landing, wish mine were so smooth.
However may I just point out one thing: why did your instructor exit the plane with the prop still turning, especially as to exit the plane, he had to move forwards, towards the moving prop? One trip on uneven ground could lead to disaster, so, without wishing to take anything away from your fantastic achievement, I would recommend that you get used to stopping the engine when people are getting in and out of the plane, that way you can ensure it won't lead to an incident such as happend with Lauren Scruggs.....