Nice! It's interesting that the image relies more on lighting and colors rather than details and shapes. Fascinating method.
Thank you! Sometimes you just don't have much time for details :] We were on plein-air in the middle of summer with our painting teacher. I was standing on the shoulder and trying to capture the big space. We didn't have much time and the cardboard is quite big too and the sun was boiling my brain (covered by bandana ) so it's like a really big sketch :]