A really good idea! I love how the bokeh actually becomes the focus of the photo! Good job! The branches adds a focal-point to the photo, which is good. It would have been a boring photo without them.
I also like the color-scheme. The way the background goes from a darker blue to a lighter blue is a neat feature.
One point of critique, is that the branches looks a bit weired, because of the big contrast between the upper parts (white) and lower parts (black), but it's only a minor detail!