I like it, the sky is great and the ilum is fantastic good atmosphere, but those billboards in foreground... I don´t know (I think they don´t match with the overall image)
Also decrease the scale of the water waves.. the wavelengths seem too long and also wave height should be less I think.
The buildings look pretty nice I think
If the foreground has few trees you can make it in 3D (do you have some software to make 3d veg, or library?), but if you need a lot of trees put 3 or 4 3D trees in your foreground without anything else and render it and make your own billboard.
Hope I can explain well (this language barrier sucks)
It looks fine to me, some of the other guys pointed out a couple of things which could be adjusted. Only thing tho that bothers me is the title of your work, i'd named it "On the shore" or something along those lines a silly detail i know..