Andrew Wyeth was first introduced to watercolor by his father, the famous illustrator N.C. Wyeth, and by one of his father’s friends, Sid Chase. He immediately began looking at the work of great watercolorists from the past, especially American artists who “lifted watercolor from the academic approach of the British and made it something freer,” he explained.
Andrew Wyeth Picks 20 Great American Watercolorists
See, React, Interpret
"It’s my belief that an artist’s job is to interpret what he or she sees, not just to imitate it. Also, an artist should try to express what is felt about the subject, not just what is seen. There are different forms of reality. The observed reality of the subject is one form, but there is also the reality of the painting that results from this observation. This reality is more crucial because it’s where the artist’s voice is heard." Thomas Schaller
There is a great video of him working through the painting.
See, React, Interpret with Artist Thomas Schaller