Here are sequential photographs of a demo I did for my workshop in Rolling Fork Mississippi this week. It is a 16 by 20. I started out with a few guidelines delineating the major forms. I did these in cobalt violet, my favorite color. That's a good color to draw in, since when you are sketching out a painting you are finding your darks (at least on a white canvas).
I went at this one in a system I call colored rice, that is I am making the painting from little strokes of color. I learned this by studying Willard Metcalf. Childe Hassam worked this way too. It gives a light feathery look that I feel works well for spring scenes.
I rapidly lay my color notes in, leaving white spaces between each stroke, they look like white ricer. Then I come back and hit those white spots with a different color. That gives me broken color. No two adjacent strokes are quite the same color although they are often the same value.
Here is the piece at the end of the session which lasted a little over two hours. I have been beat up so many times painting barns that I sometimes joke I am a barn loser, however this one came of OK.