This scene of mustard harvest is very common in the state of Punjab in India. Mustard fields have been romanticized in Bollywood films like DDLJ .
This is done from a photo. I did a preliminary sketch and then did the painting. I wanted to paint from the feel/impression that I had got from the photo. So when I was doing the painting I was looking only at the sketch for reference and not at the photo that I did the sketch from.