Bustling London.....Progressing

I'm really enjoying working up my painting of 17th Century London.
Although I did a very detailed drawing for this piece I have been changing elements and adding details as I paint.
Emmersing myself in the life of this late medieval market I find I naturally come up with details or incidents that I hadn't thought of at the drawing stage.
This process is great for my confidence in my technique, especially as I haven't painted in watercolour for a few months.
I had intended that the foreground houses would be all darker in order to show that they were closer to the viewer than the main action, but as I was painting it in, it struck me that I could vary the tone from darkest to lightest to imply that a cloud was passing overhead.

Please note that some of the photos are a bit darker and more contrasty than others depending on the time of day they are shot.