Studio Session- New Painting, Potomac River Skyscape

Here is a new painting I started last night on a large toned canvas.  I am using photographs I took recently (while in the passenger's seat) of the Potomac River looking at Washington DC.  The painting is going well so far, but I'm obviously not done yet.  I worked really fast, probably due to the fact that I had an unusual amount of coffee for that time of night for me.  Usually I work in the morning, so I needed help painting at night.

I am thinking about "passages" while painting this one, especially as I complete it.  I want to make sure the blue sky can flow through the clouds easily so it does not get caught in them and that the viewer has a place where they can "enter" the painting.