"One blob of red in the wrong place and the audience isn't looking at the hero, they're looking at a patch of curtain (or something similar) and your whole effect is lost"

This quote by Terence Fisher highlights the significance of attention to detail in creating a successful visual result. The use of the word "blob" suggests a small, apparently unimportant mistake, however Fisher emphasizes that even the tiniest error can have a major influence on the total impact. The reference of the color red adds to the idea of a distracting component that draws the audience's attention far from the desired focus. Fisher also points out the audience, stressing the significance of their perception and how a mistake can move their attention far from the hero and mess up the desired result. This quote serves as a reminder to pay very close attention to every element of a visual production to guarantee its success.