Being alone out of doors and quietly painting helped to clear up whatever mood I started the day. (Beauty has that effect on me). What fascinated me as I stood outside was the depth and richness of the colors on a foggy day. I had trouble mixing them. I was thinking cool, but I was seeing warm. What I thought were gray muted tones were really a mixture of grays with rich greens and subtle blues. It was a very confusing problem. This is why you read so much about getting out and practicing. The experience is what you need to collect not the photographs.
Work in Progress - Standing Bear Park on a Foggy Morning
oil on masonite
I also was trying an experiment in working with a large canvas or board from the start. I learned a few things right away. I have a habit of not squeezing out enough paint onto the palette. You can see that in the photograph above. I run out of paint and this causes me to paint very weak and thin. This is magnified when painting with a large canvas in the field. Also, you absolutely need to use large brushes or you will never finish.