Do quick pencil and paper sketches of what the following people are doing.
One of the roles of sketching is to capture what you observe. Quickly sketch what these people are doing (not what you imagine they might be doing). The goal is to capture the behavior, not realistically render the people. If there are emotions present, do not forget to capture them in face and body posture.
Convert your pencil sketches to digital either by taking a picture of them with a phone or other camera or by scanning the picture on a scanner. Scanners can be found in 1106 TMCB.
Convert your story board sketches to digital form.
Is the story clear from your storyboard? Did you capture the important points?