Therefore, the magic shadow requires very high acting skills from actors.
When you're acting, you must immerse yourself completely in the plot. When the plot is happy, you must have joyful emotions; when the plot is sad, you must feel sadness.
Otherwise, when you're supposed to be happy, you're mentally complaining about not being off work; when you're supposed to be sad, you're thinking about happy things. Even if your acting seems refined, it's no good. The audience, when viewing it, will be absorbed into your emotions and laugh uncontrollably.
Although some comedic magic shadows may use this contrast as a laugh point, most normal plots need a unity of plot and emotion.
And Dorothy and others, apart from Audrey who comes from an art family and is an industry insider, are outsiders forced into the scene—how can they shoot a magic shadow like this when they don't even know where to find actors?