In a novel, on the other hand, you not only have to describe the rooms, but the clothes, the characters and what they are thinking. It's a much more in-depth process.
I worked in Hollywood as a reader and a would-be writer for about 6 years before I sold my first story.
There's this sense of excitement because you invent and control the characters. You decide whether they live or die. I find this type of creative process tremendously stimulating.
What I do is put my characters into situations that are so precarious there is no way to get out. And then I figure how to get them out.
I always spend time exploring the customs and attitudes of the countries I'm using for locations, and interviewing the people who live there. I've visited over 90 countries thus far.
The thing that made Groucho special was the way he used his body parts. He also had a wicked tongue. People didn't realize it, but when Groucho said something, he meant it.