The painting is called American gothic, it was painted by grant wood. I'm not sure what the methodology was sorry.
Explanation:
It’d be a good question to pose to Norman Rockwell, that famed painter of quaint, funny scenes depicting mid-20th-century American life. His works were reproduced ceaselessly on magazine covers in the 1930s, ’40s, and ’50s—and their appeal was immense. By the 1940s, Time magazine had already christened Rockwell as “probably the best-loved U.S. artist alive,” while the New York Times had affectionately compared his paintings to Mark Twain’s novels.
Answer:
This is math not art lol.
All you do is just turn up and throw gang sgns