The flow of the line of the subject is kind of interesting in an abstractish sort of way, but it's otherwise not a terribly exciting shot for me, personally.
The longer exposure on leaves can be tough too... too short and obviously you won't get them... a little longer and you just have some motion blur... if you went all the way you could possibly get even more abstract.
Still, night photography is wicked cool. One of my favorite things and WELL worth pursuing. Keep at it.