Hi Mr. Jalapeno - welcome to RetouchPro!
First an "admin" request: If you can upload your pictures to this site using the "Attach file" field towards the bottom of the screen when writing your post, then it will be much easier for others to follow these threads months/years from now. Yes, you're limited to 100KB, but photos posted on other websites so often disappear after the poster has gotten the feedback they need - and then when others find this thread hoping to find an answer to a similar problem, it's often difficult to figure out what the thread was referring to.
Now, on to your question. One thing that I find curious about this picture is that the buildings themselves do not seem to be reflected in the water. It appears that there are lights on a bridge which shine out over the water, but the buildings themselves are not reflected. I thought that perhaps the building reflections would help me figure out where to place to moon refelction in the water. So, I'm wondering if the reflection of the moon really needs to be added?
I did play around with trying to create a moon reflection, but didn't come up with anything that looked natural to me. I think you would really need to distort the moon for a reflection, but I can't make it look right.

Perhaps if I could find a picture of a moon reflected on water I'd have a better idea of what I'm trying to create. My mind just isn't seeing it at this point. But, I wonder if that's because it's simply not needed?
Jeanie