How does Margaret George use imagery in The Autobiography of Henry VIII: With Notes by His Fool, Will Somers: A Novel?

Visual Imagery:

"It was an unusually hot and humid May, wherein to be indoors was stifling, and to pose in my heavy ceremonial robes, trimmed with fur, took the constitution of a Lowlands plough-horse. I was obliged also to keep my velvet hat on at all times, as I combined sitting for the portrait with holding interview and, audiences. I never went without the hat nowadays except when at long last I drew the curtains around me at night. I was almost completely bald now, and would not shine my pate in public. But the hat was so hot; like having a weasel curled up on top of one's head."