First I think the processing is good. It feels right and is a sharp image, at least at this size.
Some thoughts that I have....
#1 The large bright building on the left is taking a lot of attention away from the ornate building in middle-right which is probably where you want the attention. I would lower the tonal value of that building a little so that it isn't the brightest thing in the scene. However, it does balance the image with the wall on the right so it does serve as an important element so I wouldn't lower too much. Is there any texture in the building you could bring out so that it more closely matches the texture of the wall and bridge?
#2 The reflection of the ornate building is incomplete. If you're going to have a reflection of most of a building, it's probably better to include the whole thing.
#3 I love the curve, however, I dont' like how it starts in the middle of the frame. I think I would have it closer to the right so that it almost touches the reflection of the tower. That way it almost creates a loop around the entire image.... curve to bridge tunnel, to tower, to reflection of tower, back to curve. I think this would create a more dynamic and organized image.
#4 I just looked at the largest version you have and see that the wall on the right is quite soft due to the lens. This *might* have been improved by choosing a different aperture and/or focal length.
#5 The image is about a third of a stop overexposed... you're just starting to lose detail in the ornate building which is visible in the large version.
I would say, considering your camera, you did a pretty good job with this shot.