Oliver's Island - stage 1

I added a glaze this morning to "Unleaded" which means that I can't scan and post it until tomorrow so I thought that I would make a start on the next one, "Oliver's Island". This is actually the second time that I have painted this location near Strand-On-The-Green in West London although I am only interested in the shapes this time and not interested in the location itself very much. I am now narrowing it down to what I'm trying to achieve, a painting that people will want to buy, not for the location as such but for the painting itself; if you like I'm looking for a "wow" factor, something that will draw people to buy this as opposed to the plethora of art that is out there. It is going to be a nocturne with strong saturated colours with delicate moonlit clouds hanging over the water.
This is the first stage of the tonal underpainting and need this to dry overnight before I put in the clouds tomorrow morning. It was loosely "drawn" up first with a small bristle brush using a mix of Burnt Sienna and Manganese Violet thinned with Liquin and then blocked in with a 1/2" flat brush.