Oliver's Island Autumn Sunrise - stage 3

I have actually already finished the painting and am waiting for it to dry so I can scan it but in the meantime here is the stage from yesterday when I had finished the sky and island etc and I had started to block in the colours for the water reflections. As you can see I use a flat brush to lay in vertical strokes of darker versions of the colours in the sky into the water area. When all the area is covered I run a dry brush horizontally across the surface of the paint to give the impression of light reflected on water.