We have developed an information leaflet with advice on how to support children before, during and after a planned clinical procedure, using ideas from consultations with parents and professionals. Children worry about these procedures and children who are prepared and supported through procedures have better experiences. The project developing the leaflet had five phases: a scoping review of existing information, a parent consultation group, readability and parent feedback, professional input and feedback, and a final review by the patient information officer. In total, we consulted with 50 parents and 134 professionals during this project. We report on how the consultation process used group work and structured feedback to influence the content and format of the leaflet.