In chapter 16 Widge has the opportunity to observe Mr. Shakespeare. What does he think of him?

Widge thinks that Mr. Shakespeare has an ill-tempered disposition and a tendency to be difficult. 
In Chapter 16, Widge has an opportunity to observe Mr. Shakespeare while the latter is getting ready to play the part of the ghost in Hamlet. Both Widge and Mr. Shakespeare are in the tiring-room (or the theater's dressing room). Mr. Shakespeare is dressed in armor and "touching up his ghostly white makeup." The effect is startling to Widge, who can't help staring at Mr. Shakespeare in the mirror. 
After Mr. Shakespeare puts the finishing touches on his makeup, he proceeds to stare into the mirror. As far as Widge can tell, Mr. Shakespeare doesn't appear to be focusing on his appearance or anything in particular. Instead, the playwright's faraway expression hints that he is focused on other matters. Widge speculates that Mr. Shakespeare may be thinking about his next play. 
Mr. Shakespeare soon catches Widge staring at him, and he verbally reprimands him. Widge is embarrassed when Mr. Shakespeare questions his ability to do his job well. Later, Widge discovers that Mr. Shakespeare is prone to melancholy and impatience.