It added depth to the hill - great suggestion (and that's why they are judges!) Detail of the hill:
I also saw this project at San Francisco School of Needlework and Design; it is one of the places I've kept my eye on. Since I'm going through MC Color program, I should be able to come up with the color design for their challenge landscape:
This is my rendition so far - I may or may not send it in - depends on how I feel about it when finished. I removed the grapes, and put the purple on the hills, with orange and green for the California poppies. Another triadic scheme. I echo'ed a little bit of the orange in the sky; it may not be enough - I will see when the poppies are done.