way to go Anth!
AnnieA, the oomphest darks come from glazing of course. i don't know kink aid and don't like the sound of it, but to illustrate at random: ochre ground, prussian, prussian/cobalt for the water; black, vermilion/phthalo green, madder, madder/viridian+ a molecule of white for the trees. trees naturally need detail in large format, ghostie wisps of sky color. but you know all this.
is there maybe something else, try playing with the buildings, roofs, their values, paint their reflections in the water etc. maybe you're about to have an idea and need time for it?