Distinguish kinds of material
A handwritten note, an interview excerpt, and a reproduced artwork provide different kinds of evidence. Notice how their arrangement invites a narrative, and separate that narrative from what each item independently supports.
Keep the collaborators in view
Illustrated storytelling involves many visual contributions. Refer to the credits supplied with a work before attributing its appearance to a writer, artist, designer, or photographer.
Look at page rhythm
Compare dense textual spreads with quieter visual pages. Their sequence can make a biography feel intimate, expansive, or analytical. Describe that effect without assuming the layout reveals the subject's private thoughts.