The first image is the underpainting itself. I thin the oils down with Gamsol and fill in where I want to with the colors I've chosen. In this case I wanted to pump up the blues and oranges which will be in the final painting.
Image 2 is done after the oil underpainting has dried. This only takes a few minutes especially when painting in plein air. I am starting to lay in my darks.
Image 3 is adding the colors that I will work with to the end of the painting. I have decided to leave the sky pretty much as the underpainting with just a few touches of pastel to enhance what is already there.
Image 4 is pretty much the final but I still may go back and add more color to the trees or perhaps define them more. At this stage, I usually let the painting sit with it's back to me for a couple of days and then take a look to see if there is something I want to add or change.
I'll post the final when it gets to that stage.
Feel free to email me or call me if you have any questions,