I am a huge Mel Brooks fan. And I do think that not seeing his canon of classics is a bit criminal or clueless.
My mother, at sixty, is one of those classic beauties: all neck and cheekbones, sharp lines that hide her wrinkles from a distance. She still gets whistles from construction workers from three stories up.
We're all amateur investigators. We scan bookshelves, we ogle trinkets left out in the open, we calculate the cost of furniture and study the photographs on display; sometimes we even check out the medicine cabinet.
My writing process is chaos. I usually start with an overarching theme. Then I establish several story threads, but I don't outline. I just start writing and keep notes for what may come. It's an organic process that's usually pretty flexible.