COMPOSITION... Placement of subject, angle chosen, are all fine choices I think. Your horizon goes right through the center of the image though, making the composition a little static, but the diagonal line of the river gives something for your eye to follow. I don't know how I feel about having the top of the building crop off...I keep wanting to back away from the shot so I can see the whole scene. The reflections of the water add interest to the already beautiful trees.... Apart from the technical problems, night scenes are great to look at because they're a stark departure from the "usualness" of daylight scenes. Objects take on a whole new look when illuminated by artificial light.
TECHNIQUE... What I like about the exposure is how the foreground and background is well lit. But some parts of the trees are a little TOO lit...highlights are blown out too much on the trees. And the noise introduced from the long exposure does detract from the shot a little. 2 seconds isn't really that long, but still too much noise, perhaps the image was blown up as well? In a non-dpclegal world...you could take two exposure of the same scene: one that evenly lights the background, and one shot perfectly exposed for the trees. In photoshop, the images are combined, masking out the unwanted sections of each photo. Its really too bad noise on a digital camera is not equal to high grain in film shots.
OVERALL... While night scenes are great subject matter, digital cameras have a bit to go before they can produce good results. You took a good shot given the limitation of your equipment and rules of the challenge....
The graininess here competes with the cherry blossoms to give an overall busy impression. It's almost like an impressionist painting... not altogether unpleasant. The composition is nice, but the building in the background is distracting.
Very festive image that the reflection in the water emphasizes and enhaces greatly. The sky is a bit grainy, but the composition and arrangement (point of view) make this image really work for me.
Surely, this looked better in person. It seems that the lighting (must be in back of the trees), draws the color out of the trees in this photo. Also, it is very unfortunate that there is a lot of artifact in your picture. Otherwise, it IS a well framed shot. I like the reflection in the water.
Extremely grainy with lots of noise in the night sky and grass which seems to blow out the detail in the trees, too. The clarity and "night" feeling are lost.
Hmmm... whats with your sky? It looks to me like this is a case of having a dark photo and lightening it in photoshop... is this what happened? Pretty nice composition... and good reflection. Careful with Post adjustments.