This one took me longer than 1 hour. maybe about 1 hr 20min. I struggled with how to render the field. I had done a long grass brush, but it felt too textured, and I felt like I wasn't painting it so mush as the brush was. It wasn't working anyway. So I decided to try and make it more like a flowing block. I have seen fields rendered that way before. I think parts of the study were successful, but still not to the point where it is successful as an illustration or painting goes.
Anyway, This one was probably one of my more challenging ones, so I think I will try another field scene soon, and look up some ideas on how to make it work better.