First and foremost, I am a beginner at photography, although I have taken a class on it before, but I hope my comments are still welcome anyway. Also, note that my personal style is 'bold', which means I favour in-focus, macro shots more than wide-scape photography. Hence my comments will be affected by personal taste.
First and foremost, I must say that I love the myriad colours the photo delivers. You have chosen a very good subject.
My criticisms would be on the following:
1. Foreground
It's too wide, and draws attention away from what should be the more aesthetically pleasing subject, which is the skyline. Here, I've cropped off a significant portion of the foreground. In my humble opinion, it looks a tad better as I don't have to gaze at the water too much, and can focus more on the beauty of the lights and architecture.
2. Exposure length
Looking at your exif data, I noticed that you set your exposure time to 30 seconds, which I think would have been better if you set it longer so as to get a more ethereal quality of the waterfront- the reflection of lights can be a tad distracting if the subject is the skyline (or rather, line of buildings). I think it would also make your picture a tad more emotive.
On the topic of exposure, some lights can appear to be too blurry, which some people may like, and some may dislike. I'm neutral, and I think it's okay, actually. I may not have noticed the merlion, but that's because I don't really care about the merlion as I'm more attracted to the skyline (which should be the subject) I may be wrong here with the technicality (do correct me if I'm wrong, thanks!), but if you want more precise and apparent depth of field, you could increase your f stop, though I'm not sure how many people like to look at a picture with so much details. (I'm a minimalist, so to speak
)
3. Focal point
Like what others before me have mentioned, the picture is pretty 'left-side' heavy. I believe this can be corrected if you include a vanishing point; specifically, the last building on the left, which widens up towards the lake/water towards the right, hence creating a triangular-ish foreground that complements the backdrop. This would require you to angle your camera to the right and backwards, and you may capture more items on your right (which you can crop out later).
I hope this was useful in some way! I'm learning too, until I get my very own DSLR