Watercolour and water effects

Well, I say water effect, but that goes for sky effects as well. I've been reading up and watching tutorials in the last couple of days, and I've tried to put what I think I've picked up into effect with this painting of a lighthouse: -

I can't lie, I'm quite pleased with this. The sky is even a little more subtle than it appears on this scan, and I'm pleased with the way that the sea has come out, and with the dolour combinations. It's almost completely just water colour, but I've use just a little white gouache in places.