I plan my books by letting scenes play through my head, grabbing images that stick to me. Once I have a few that feel very compelling, very hot, and very meaningful, I start my outlining process, building around the emotional and erotic center of those scenes.
For my book Untouched, I knew I wanted to write about masturbation and a woman who struggles with being touched by other people. Very early on, I got an image of the woman playing with a dildo while watching a group of people having sex. I saw the intense looks passing between her and one of the people in the orgy, and then I envisioned that person stepping away from the group and coming toward her. He reaches out with one hand, approaching her face, and she stiffens because she thinks he’s going to touch her. There is enough tenderness and connection between them that maybe she wants him to, but her problems with touch still hold her back.