I like the atmosphere very much, romantic lighting indeed. Well done render. But you can take this further if you wish. Add some shrub or grasses, mainly to the foreground, try to get a different shore coloration, or displacement (one thing you could do is add a surface layer, blended by a fractal (small sizes, slightly stretched Y), blend the fractal by a distribution shader with highest set to 1m above water level, fuzzy zone maybe the same, then set the displacement offset of the surface layer at -1 or a bit more... you'll have an eroded look to the shore. Same can be done with a displacement shader fed by a fractal (using its colors) or with the displacements in the fractal itself, of course).
I would also decrease the roughness of the water a tad and raise the patchy effect. I don't know how big the lake is, but you'd maybe have to reduce the patch size as well. You'll get a lake that's disturbed locally by winds coming around the hills, and it would add some more interest to the water.
And, please, keep on posting!
