Back in 2014, writer Mira Jacob's six-year-old son Z became obsessed with Michael Jackson. He wanted to dance like Michael, he wanted to look like Michael, and what began as Z's questions about his pop-star obsession spread into deeper questions about skin and color and race and family. Jacob is East Indian and her husband is Jewish, and Z wanted to understand who he was.

When Z learned about the killing of Michael Brown, a black man shot to death by a white police officer in Ferguson, Missouri, the questions grew more complex, and carried fear.

Matt Johnson is a London based book cover designer. Among the works in his portfolio is the incredible jacket for Rachel Khong's Goodbye, Vitamin published by Scribner UK. Here he shares for us his artwork and process, along with the original concepts developed by the creative team.

"One too many people asked me if 'Sleepwalker's' was going to have a sequel, and that kind of question makes me claustrophobic in my soul." In part to push her creative self forward to the next narrative while avoiding this constant question, to skirt the Second Book trap/trope, Jacob moved into a different medium: the graphic memoir.