“I think that I am actually more demanding of a director than any of the actors that I work with. I am a nightmare for directors because I have very strange visions of what I want.”

Simplified Meaning:

The speaker is saying that they have very high expectations for the director they work with, even more than the actors do. They believe they are difficult to please because they have unique and specific ideas about how things should be done. For instance, think about a fashion designer who imagines a dress in a very particular way. When they work with a tailor to create the dress, they might be very picky and insistent on getting every detail just right, which can make the process challenging for the tailor. Similarly, the speaker has clear and unusual creative visions and wants the director to bring those exact ideas to life. This means that to work harmoniously, both the speaker and the director need to communicate well and be patient with each other. If you have a special vision for a project, it's important to be open about your expectations and work closely with others, even if it might be demanding.