There is the danger of over preparation, of loss of spontaneity; over rehearsal is the most terrible thing you can imagine. We do have a very close association between costume and set designer, though. And the cameraman is very important, of course.

The reflection of the flame in the glass seems to be touching the hand. And you feel the helpless fear of these dismembered parts. This sort of thing can hardly be visualized at the script stage.

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.

Terence Fisher Quotes