Reflect on the types of evidence you expect to be found and collected from the Willow Lane crime scene, and make a list of the types of skills the technicians will need to help you process the crime. Then, draw a simple diagram of the secured area, including known elements of the crime. Label areas where you want to direct the technician's attention and for what type of evidence. Make sure you indicate the outer boundaries established for the crime scene.
Finally, start a "crime scene logbook," making some notes recording information you currently know about the crime and the crime scene.