Big take-aways
I had some take-aways as I was sketching for the big version (10x12.5) of the thumbnail. I realized that when I watch an online demo of an artist working on a full sheet or a half sheet, on the screen, the paper looks small since it fits on the screen. You really don't know how big it is. The same way, as I view a thumbnail in my sketchbook from 6"-9" away and scrutinize it, a big painting cannot be viewed that way. I understood the importance of distance - like watching TV. You sit back some feet away, more if the screen is bigger. You need to approach the viewing of the large work the same way - it needs to be scaled. Essentially, when you view it from the right distance, it becomes no different than the thumbnail. It still has to work - the value pattern is foremost, the content or subject may not be discernible, and you evaluate it for the darks and lights that draw you in. I was very pleased with the sketch, so pleased that I was afraid to paint and ruin the sketch!