The mural of the audience
What did you think of the moment when Rupert is practicing his routine in front of the mural of the audience?
It's a fascinating, strange image. The mural is clearly not in his basement, but in his mind. It seems to symbolize a mixture of reality and fantasy, or the halfway point between them. We see a representation of what Rupert is imagining (the audience), but instead of seeing a real audience, it's a flat, lifeless image, as if reality and fantasy "crashed" into each other.
The space to the sides of the mural is interesting, too. In his mind, does it go on forever, or does it end a few feet further on each side? It's not that the filmmakers necessarily designed it that way to symbolize anything, but it's intriguing. I see it and I want to know what's over there.