Landscape 01 - 15 x 22 inches watercolor painting

I have started another landscape watercolor painting on a 11 x15 inches Arches cold press watercolor paper.  I made a sketch with lead pencil and then put on a backgournd layer as an underpainting.  This time I choose to use a different pigment other than Burnt Umber and I have to choose Cerulean Blue.  I also use a large brush for this exercise.  At this stage, all I concern is to fill in all the large shapes with their appropiate value using Cerulean Blue.  It was a fast but very focus exercise becasue I need to charge the paper with the right amount of paint and water before it dries out on me.  Control is very important at this stage and in the application of the underpainting.