I understand the art looks entirely different with meaning. I'm not sure I understand the "canvas" bit?

I decided to take a good look at the Peter Blake self-portrait (I didn't know who he was). His denim clothing, colours, converse, Elvis mag and badges made me think it has an American theme. That's all I got.

I then read he was fascinated with America. So although blatantly obvious, I was on the right track ()