Your colleague Carly recently gave her first presentation to your department. Before starting her slide show, she took a few minutes to remind the audience of their shared work goals. Carly used a keyboard to advance her slides, and she was careful not to block the projection. For each slide, she explained how the information on screen related to her larger takeaway messages. She became flustered when two slides were out of order, but she recovered quickly. Afterward, Carly asked you how she might improve. Which guideline will you remind her of?