W/C Pencil Landscape from photograph

This is another w/c pencil landscape using a reference photograph. I did it last week and it's interesting having left it for a few days and now seeing side by side with the photograph I can see areas I'd make darker / lighter. I wasn't so much interested as getting a faithful representation of the scene as getting a good range of values / colours and sense of space. I did do a quick thumbnail value sketch before I started - this is something I am trying to do now. Not sure it helps that much in terms of the final result but at least it gets me thinking about values at the start. I also took my time with this and dried each layer with a hair dryer in between so as to make it easier to work on. Everytime I use the pencils I learn something more!