I looked at this image for quite a while, and the abstract "stars" are interesting. However, the milky look of the water seemed to me to detract from the abstraction. Hope you don't mind, but I tried increasing the contrast and found, for me, anyway, that the effect of a night sky is heightened (pardon the pun!).

the image was originally closer to what you did with it that what I've done!

In the end, I felt like the ambiguity (namely caused by the title 'Coin Pool') was more obvious when the contrast was lacking, as it gave the impression of shallow water. Thinking of taking 'Night Sky' out of the name all together...